﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!--Created by Sigma Conso, Powered by IRIS Carbon, Unique Code 624ff1ed54148f24243a18da, Generated At Fri, 08 Apr 2022 08:31:23 GMT-->
<link:linkbase xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
  <link:arcroleRef arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/Prospettodellevariazionineicontidipatrimonionettoconsolidato" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#Prospettodellevariazionineicontidipatrimonionettoconsolidato" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/Anchoring" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#Anchoring" />
  <link:roleRef roleURI="http://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="simple" xlink:href="http://www.esma.europa.eu/taxonomy/2020-03-16/esef_cor.xsd#esef_role-999999" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/CONTOECONOMICOCONSOLIDATO" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#CONTOECONOMICOCONSOLIDATO" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/CONTOECONOMICOCOMPLESSIVO" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#CONTOECONOMICOCOMPLESSIVO" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/SITUAZIONEPATRIMONIALEFINANZIARIA" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#SITUAZIONEPATRIMONIALEFINANZIARIA" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/RENDICONTOFINANZIARIOCONSOLIDATO" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#RENDICONTOFINANZIARIOCONSOLIDATO" />
  <link:roleRef roleURI="http://www.itway.com/xbrl/role/RENDICONTOFINANZIARIOCONSOLIDATOParenthetical" xlink:type="simple" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#RENDICONTOFINANZIARIOCONSOLIDATOParenthetical" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/Prospettodellevariazionineicontidipatrimonionettoconsolidato">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" xlink:title="ifrs-full_StatementOfChangesInEquityLineItems" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" xlink:title="ifrs-full_StatementOfChangesInEquityTable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_StatementOfChangesInEquityTable" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_StatementOfChangesInEquityTable" xlink:type="arc" order="0" xbrldt:closed="true" xbrldt:contextElement="scenario" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" xlink:title="ifrs-full_ComponentsOfEquityAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="ifrs-full_StatementOfChangesInEquityTable" xlink:to="ifrs-full_ComponentsOfEquityAxis" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityTable to ifrs-full_ComponentsOfEquityAxis" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityMember" xlink:label="ifrs-full_EquityMember" xlink:title="ifrs-full_EquityMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="ifrs-full_ComponentsOfEquityAxis" xlink:to="ifrs-full_EquityMember" xlink:title="Definition : ifrs-full_ComponentsOfEquityAxis to ifrs-full_EquityMember" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssuedCapitalMember" xlink:label="ifrs-full_IssuedCapitalMember" xlink:title="ifrs-full_IssuedCapitalMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_IssuedCapitalMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_IssuedCapitalMember" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TreasurySharesMember" xlink:label="ifrs-full_TreasurySharesMember" xlink:title="ifrs-full_TreasurySharesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_TreasurySharesMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_TreasurySharesMember" xlink:type="arc" use="optional" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_SharePremiumMember" xlink:label="ifrs-full_SharePremiumMember" xlink:title="ifrs-full_SharePremiumMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_SharePremiumMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_SharePremiumMember" xlink:type="arc" use="optional" order="2" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatutoryReserveMember" xlink:label="ifrs-full_StatutoryReserveMember" xlink:title="ifrs-full_StatutoryReserveMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_StatutoryReserveMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_StatutoryReserveMember" xlink:type="arc" use="optional" order="3" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_VoluntaryReserveMember" xlink:label="itw_VoluntaryReserveMember" xlink:title="itw_VoluntaryReserveMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="itw_VoluntaryReserveMember" xlink:title="Definition : ifrs-full_EquityMember to itw_VoluntaryReserveMember" xlink:type="arc" order="4" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherReservesMember" xlink:label="ifrs-full_OtherReservesMember" xlink:title="ifrs-full_OtherReservesMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_OtherReservesMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_OtherReservesMember" xlink:type="arc" use="optional" order="5" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:title="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:type="arc" use="optional" order="6" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RetainedEarningsMember" xlink:label="ifrs-full_RetainedEarningsMember" xlink:title="ifrs-full_RetainedEarningsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_RetainedEarningsMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_RetainedEarningsMember" xlink:type="arc" use="optional" order="7" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:label="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:title="ifrs-full_EquityAttributableToOwnersOfParentMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:type="arc" use="optional" order="8" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncontrollingInterestsMember" xlink:label="ifrs-full_NoncontrollingInterestsMember" xlink:title="ifrs-full_NoncontrollingInterestsMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_NoncontrollingInterestsMember" xlink:title="Definition : ifrs-full_EquityMember to ifrs-full_NoncontrollingInterestsMember" xlink:type="arc" use="optional" order="9" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:label="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:title="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:type="arc" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssueOfEquity" xlink:label="ifrs-full_IssueOfEquity" xlink:title="ifrs-full_IssueOfEquity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_IssueOfEquity" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_IssueOfEquity" xlink:type="arc" use="optional" order="2" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:title="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:type="arc" use="optional" order="3" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:label="itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:title="itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:type="arc" order="4" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:label="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:title="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:type="arc" use="optional" order="5" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" xlink:title="ifrs-full_ProfitLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_ProfitLoss" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_ProfitLoss" xlink:type="arc" use="optional" order="6" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeAbstract" xlink:label="ifrs-full_OtherComprehensiveIncomeAbstract" xlink:title="ifrs-full_OtherComprehensiveIncomeAbstract" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_OtherComprehensiveIncomeAbstract" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_OtherComprehensiveIncomeAbstract" xlink:type="arc" use="optional" order="7" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:title="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_OtherComprehensiveIncomeAbstract" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:title="Definition : ifrs-full_OtherComprehensiveIncomeAbstract to ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:title="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_OtherComprehensiveIncomeAbstract" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:title="Definition : ifrs-full_OtherComprehensiveIncomeAbstract to ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:type="arc" use="optional" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" xlink:title="ifrs-full_ComprehensiveIncome" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_ComprehensiveIncome" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_ComprehensiveIncome" xlink:type="arc" use="optional" order="8" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" xlink:title="ifrs-full_Equity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_Equity" xlink:title="Definition : ifrs-full_StatementOfChangesInEquityLineItems to ifrs-full_Equity" xlink:type="arc" use="optional" order="9" xbrldt:closed="false" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/Anchoring">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" xlink:title="ifrs-full_Equity" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_ShareCapitalAndReserves" xlink:label="itw_ShareCapitalAndReserves" xlink:title="itw_ShareCapitalAndReserves" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_Equity" xlink:to="itw_ShareCapitalAndReserves" xlink:title="Definition : ifrs-full_Equity to itw_ShareCapitalAndReserves" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xlink:title="ifrs-full_ProfitLossFromOperatingActivities" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_GrossOperatingResult" xlink:label="itw_GrossOperatingResult" xlink:title="itw_GrossOperatingResult" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_ProfitLossFromOperatingActivities" xlink:to="itw_GrossOperatingResult" xlink:title="Definition : ifrs-full_ProfitLossFromOperatingActivities to itw_GrossOperatingResult" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:title="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:label="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:title="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:title="Definition : ifrs-full_CashFlowsFromUsedInFinancingActivities to itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:title="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_CashFlowFromAssetsSold" xlink:label="itw_CashFlowFromAssetsSold" xlink:title="itw_CashFlowFromAssetsSold" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="itw_CashFlowFromAssetsSold" xlink:title="Definition : ifrs-full_IncreaseDecreaseInCashAndCashEquivalents to itw_CashFlowFromAssetsSold" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" xlink:title="ifrs-full_IssuedCapital" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="itw_ShareCapitalAndReserves" xlink:to="ifrs-full_IssuedCapital" xlink:title="Definition : itw_ShareCapitalAndReserves to ifrs-full_IssuedCapital" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherReserves" xlink:label="ifrs-full_OtherReserves" xlink:title="ifrs-full_OtherReserves" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="itw_ShareCapitalAndReserves" xlink:to="ifrs-full_OtherReserves" xlink:title="Definition : itw_ShareCapitalAndReserves to ifrs-full_OtherReserves" xlink:type="arc" use="optional" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ChangesInEquity" xlink:label="ifrs-full_ChangesInEquity" xlink:title="ifrs-full_ChangesInEquity" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:label="itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:title="itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_ChangesInEquity" xlink:to="itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:title="Definition : ifrs-full_ChangesInEquity to itw_IncreaseDecreaseThroughAllocationOfResultForPeriod" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:label="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:title="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_ChangesInEquity" xlink:to="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:title="Definition : ifrs-full_ChangesInEquity to itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:type="arc" use="optional" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:label="ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:title="ifrs-full_ProceedsFromNoncurrentBorrowings" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:to="ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:title="Definition : itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities to ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:label="ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:title="ifrs-full_RepaymentsOfNoncurrentBorrowings" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:to="ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:title="Definition : itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities to ifrs-full_RepaymentsOfNoncurrentBorrowings" xlink:type="arc" use="optional" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForProvisions" xlink:label="ifrs-full_AdjustmentsForProvisions" xlink:title="ifrs-full_AdjustmentsForProvisions" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_AdjustmentsForProvisionsForRisks" xlink:label="itw_AdjustmentsForProvisionsForRisks" xlink:title="itw_AdjustmentsForProvisionsForRisks" />
    <link:definitionArc xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:from="ifrs-full_AdjustmentsForProvisions" xlink:to="itw_AdjustmentsForProvisionsForRisks" xlink:title="Definition : ifrs-full_AdjustmentsForProvisions to itw_AdjustmentsForProvisionsForRisks" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.esma.europa.eu/xbrl/role/cor/esef_role-999999">
    <link:loc xlink:type="locator" xlink:href="http://www.esma.europa.eu/taxonomy/2020-03-16/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:label="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:title="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:label="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:title="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:type="arc" use="optional" order="0" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DomicileOfEntity" xlink:label="ifrs-full_DomicileOfEntity" xlink:title="ifrs-full_DomicileOfEntity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DomicileOfEntity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DomicileOfEntity" xlink:type="arc" use="optional" order="1" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_LegalFormOfEntity" xlink:label="ifrs-full_LegalFormOfEntity" xlink:title="ifrs-full_LegalFormOfEntity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_LegalFormOfEntity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_LegalFormOfEntity" xlink:type="arc" use="optional" order="2" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CountryOfIncorporation" xlink:label="ifrs-full_CountryOfIncorporation" xlink:title="ifrs-full_CountryOfIncorporation" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CountryOfIncorporation" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CountryOfIncorporation" xlink:type="arc" use="optional" order="3" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:label="ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:title="ifrs-full_AddressOfRegisteredOfficeOfEntity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:type="arc" use="optional" order="4" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PrincipalPlaceOfBusiness" xlink:label="ifrs-full_PrincipalPlaceOfBusiness" xlink:title="ifrs-full_PrincipalPlaceOfBusiness" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PrincipalPlaceOfBusiness" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_PrincipalPlaceOfBusiness" xlink:type="arc" use="optional" order="5" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:label="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:title="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:type="arc" use="optional" order="6" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfParentEntity" xlink:label="ifrs-full_NameOfParentEntity" xlink:title="ifrs-full_NameOfParentEntity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfParentEntity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NameOfParentEntity" xlink:type="arc" use="optional" order="7" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Revenue" xlink:label="ifrs-full_Revenue" xlink:title="ifrs-full_Revenue" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Revenue" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_Revenue" xlink:type="arc" use="optional" order="8" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherIncome" xlink:label="ifrs-full_OtherIncome" xlink:title="ifrs-full_OtherIncome" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherIncome" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherIncome" xlink:type="arc" use="optional" order="9" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RawMaterialsAndConsumablesUsed" xlink:label="ifrs-full_RawMaterialsAndConsumablesUsed" xlink:title="ifrs-full_RawMaterialsAndConsumablesUsed" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RawMaterialsAndConsumablesUsed" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_RawMaterialsAndConsumablesUsed" xlink:type="arc" use="optional" order="10" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ServicesExpense" xlink:label="ifrs-full_ServicesExpense" xlink:title="ifrs-full_ServicesExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ServicesExpense" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ServicesExpense" xlink:type="arc" use="optional" order="11" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EmployeeBenefitsExpense" xlink:label="ifrs-full_EmployeeBenefitsExpense" xlink:title="ifrs-full_EmployeeBenefitsExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EmployeeBenefitsExpense" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_EmployeeBenefitsExpense" xlink:type="arc" use="optional" order="12" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherExpenseByNature" xlink:label="ifrs-full_OtherExpenseByNature" xlink:title="ifrs-full_OtherExpenseByNature" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherExpenseByNature" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherExpenseByNature" xlink:type="arc" use="optional" order="13" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_GrossOperatingResult" xlink:label="itw_GrossOperatingResult" xlink:title="itw_GrossOperatingResult" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="itw_GrossOperatingResult" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to itw_GrossOperatingResult" xlink:type="arc" order="14" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:label="ifrs-full_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:title="ifrs-full_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:type="arc" use="optional" order="15" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xlink:title="ifrs-full_ProfitLossFromOperatingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLossFromOperatingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProfitLossFromOperatingActivities" xlink:type="arc" use="optional" order="16" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceIncomeCost" xlink:label="ifrs-full_FinanceIncomeCost" xlink:title="ifrs-full_FinanceIncomeCost" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_FinanceIncomeCost" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_FinanceIncomeCost" xlink:type="arc" use="optional" order="17" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" xlink:title="ifrs-full_ProfitLossBeforeTax" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLossBeforeTax" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProfitLossBeforeTax" xlink:type="arc" use="optional" order="18" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:title="ifrs-full_IncomeTaxExpenseContinuingOperations" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:type="arc" use="optional" order="19" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" xlink:title="ifrs-full_ProfitLoss" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLoss" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProfitLoss" xlink:type="arc" use="optional" order="20" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:title="ifrs-full_ProfitLossAttributableToOwnersOfParent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:type="arc" use="optional" order="21" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:label="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:title="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:type="arc" use="optional" order="22" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_BasicEarningsLossPerShare" xlink:label="ifrs-full_BasicEarningsLossPerShare" xlink:title="ifrs-full_BasicEarningsLossPerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_BasicEarningsLossPerShare" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_BasicEarningsLossPerShare" xlink:type="arc" use="optional" order="23" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DilutedEarningsLossPerShare" xlink:label="ifrs-full_DilutedEarningsLossPerShare" xlink:title="ifrs-full_DilutedEarningsLossPerShare" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DilutedEarningsLossPerShare" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DilutedEarningsLossPerShare" xlink:type="arc" use="optional" order="24" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:title="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation" xlink:type="arc" use="optional" order="25" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:title="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:type="arc" use="optional" order="26" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" xlink:title="ifrs-full_ComprehensiveIncome" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ComprehensiveIncome" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ComprehensiveIncome" xlink:type="arc" use="optional" order="27" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:title="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:type="arc" use="optional" order="28" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:title="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:type="arc" use="optional" order="29" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="ifrs-full_PropertyPlantAndEquipment" xlink:title="ifrs-full_PropertyPlantAndEquipment" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PropertyPlantAndEquipment" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_PropertyPlantAndEquipment" xlink:type="arc" use="optional" order="30" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Goodwill" xlink:label="ifrs-full_Goodwill" xlink:title="ifrs-full_Goodwill" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Goodwill" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_Goodwill" xlink:type="arc" use="optional" order="31" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:title="ifrs-full_IntangibleAssetsOtherThanGoodwill" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:type="arc" use="optional" order="32" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RightofuseAssets" xlink:label="ifrs-full_RightofuseAssets" xlink:title="ifrs-full_RightofuseAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RightofuseAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_RightofuseAssets" xlink:type="arc" use="optional" order="33" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:title="ifrs-full_InvestmentAccountedForUsingEquityMethod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:type="arc" use="optional" order="34" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" xlink:title="ifrs-full_DeferredTaxAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DeferredTaxAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DeferredTaxAssets" xlink:type="arc" use="optional" order="35" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentFinancialAssets" xlink:label="ifrs-full_NoncurrentFinancialAssets" xlink:title="ifrs-full_NoncurrentFinancialAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentFinancialAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentFinancialAssets" xlink:type="arc" use="optional" order="36" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherNoncurrentAssets" xlink:label="ifrs-full_OtherNoncurrentAssets" xlink:title="ifrs-full_OtherNoncurrentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherNoncurrentAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherNoncurrentAssets" xlink:type="arc" use="optional" order="37" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" xlink:title="ifrs-full_NoncurrentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentAssets" xlink:type="arc" use="optional" order="38" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Inventories" xlink:label="ifrs-full_Inventories" xlink:title="ifrs-full_Inventories" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Inventories" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_Inventories" xlink:type="arc" use="optional" order="39" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTradeReceivables" xlink:label="ifrs-full_CurrentTradeReceivables" xlink:title="ifrs-full_CurrentTradeReceivables" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTradeReceivables" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CurrentTradeReceivables" xlink:type="arc" use="optional" order="40" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCurrentAssets" xlink:label="ifrs-full_OtherCurrentAssets" xlink:title="ifrs-full_OtherCurrentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherCurrentAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherCurrentAssets" xlink:type="arc" use="optional" order="41" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" xlink:title="ifrs-full_CashAndCashEquivalents" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashAndCashEquivalents" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CashAndCashEquivalents" xlink:type="arc" use="optional" order="42" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCurrentFinancialAssets" xlink:label="ifrs-full_OtherCurrentFinancialAssets" xlink:title="ifrs-full_OtherCurrentFinancialAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherCurrentFinancialAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherCurrentFinancialAssets" xlink:type="arc" use="optional" order="43" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentFinancialAssets" xlink:label="ifrs-full_CurrentFinancialAssets" xlink:title="ifrs-full_CurrentFinancialAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentFinancialAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CurrentFinancialAssets" xlink:type="arc" use="optional" order="44" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentAssets" xlink:label="ifrs-full_CurrentAssets" xlink:title="ifrs-full_CurrentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CurrentAssets" xlink:type="arc" use="optional" order="45" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" xlink:title="ifrs-full_Assets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Assets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_Assets" xlink:type="arc" use="optional" order="46" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_ShareCapitalAndReserves" xlink:label="itw_ShareCapitalAndReserves" xlink:title="itw_ShareCapitalAndReserves" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="itw_ShareCapitalAndReserves" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to itw_ShareCapitalAndReserves" xlink:type="arc" order="47" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RetainedEarnings" xlink:label="ifrs-full_RetainedEarnings" xlink:title="ifrs-full_RetainedEarnings" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RetainedEarnings" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_RetainedEarnings" xlink:type="arc" use="optional" order="48" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParent" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent" xlink:title="ifrs-full_EquityAttributableToOwnersOfParent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EquityAttributableToOwnersOfParent" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_EquityAttributableToOwnersOfParent" xlink:type="arc" use="optional" order="49" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncontrollingInterests" xlink:label="ifrs-full_NoncontrollingInterests" xlink:title="ifrs-full_NoncontrollingInterests" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncontrollingInterests" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncontrollingInterests" xlink:type="arc" use="optional" order="50" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" xlink:title="ifrs-full_Equity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Equity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_Equity" xlink:type="arc" use="optional" order="51" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:label="ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:title="ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:type="arc" use="optional" order="52" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentPayablesToTradeSuppliers" xlink:label="ifrs-full_NoncurrentPayablesToTradeSuppliers" xlink:title="ifrs-full_NoncurrentPayablesToTradeSuppliers" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentPayablesToTradeSuppliers" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentPayablesToTradeSuppliers" xlink:type="arc" use="optional" order="53" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentProvisions" xlink:label="ifrs-full_NoncurrentProvisions" xlink:title="ifrs-full_NoncurrentProvisions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentProvisions" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentProvisions" xlink:type="arc" use="optional" order="54" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" xlink:title="ifrs-full_DeferredTaxLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DeferredTaxLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DeferredTaxLiabilities" xlink:type="arc" use="optional" order="55" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentFinancialLiabilities" xlink:label="ifrs-full_NoncurrentFinancialLiabilities" xlink:title="ifrs-full_NoncurrentFinancialLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentFinancialLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentFinancialLiabilities" xlink:type="arc" use="optional" order="56" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="ifrs-full_NoncurrentLiabilities" xlink:title="ifrs-full_NoncurrentLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_NoncurrentLiabilities" xlink:type="arc" use="optional" order="57" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentFinancialLiabilities" xlink:label="ifrs-full_CurrentFinancialLiabilities" xlink:title="ifrs-full_CurrentFinancialLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentFinancialLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CurrentFinancialLiabilities" xlink:type="arc" use="optional" order="58" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:title="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:type="arc" use="optional" order="59" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:label="ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:title="ifrs-full_CurrentTaxLiabilitiesCurrent" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:type="arc" use="optional" order="60" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherCurrentLiabilities" xlink:label="ifrs-full_OtherCurrentLiabilities" xlink:title="ifrs-full_OtherCurrentLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherCurrentLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherCurrentLiabilities" xlink:type="arc" use="optional" order="61" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentLiabilities" xlink:label="ifrs-full_CurrentLiabilities" xlink:title="ifrs-full_CurrentLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CurrentLiabilities" xlink:type="arc" use="optional" order="62" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" xlink:title="ifrs-full_Liabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Liabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_Liabilities" xlink:type="arc" use="optional" order="63" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAndLiabilities" xlink:label="ifrs-full_EquityAndLiabilities" xlink:title="ifrs-full_EquityAndLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EquityAndLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_EquityAndLiabilities" xlink:type="arc" use="optional" order="64" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:label="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:title="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to itw_IncreaseDecreaseThroughTransactionsOnOwnShares" xlink:type="arc" order="65" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssueOfEquity" xlink:label="ifrs-full_IssueOfEquity" xlink:title="ifrs-full_IssueOfEquity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IssueOfEquity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IssueOfEquity" xlink:type="arc" use="optional" order="66" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:title="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:type="arc" use="optional" order="67" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:label="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:title="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:type="arc" use="optional" order="68" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherAdjustmentsForNoncashItems" xlink:label="ifrs-full_OtherAdjustmentsForNoncashItems" xlink:title="ifrs-full_OtherAdjustmentsForNoncashItems" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherAdjustmentsForNoncashItems" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_OtherAdjustmentsForNoncashItems" xlink:type="arc" use="optional" order="69" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDepreciationExpense" xlink:label="ifrs-full_AdjustmentsForDepreciationExpense" xlink:title="ifrs-full_AdjustmentsForDepreciationExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForDepreciationExpense" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForDepreciationExpense" xlink:type="arc" use="optional" order="70" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForAmortisationExpense" xlink:label="ifrs-full_AdjustmentsForAmortisationExpense" xlink:title="ifrs-full_AdjustmentsForAmortisationExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForAmortisationExpense" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForAmortisationExpense" xlink:type="arc" use="optional" order="71" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DepreciationRightofuseAssets" xlink:label="ifrs-full_DepreciationRightofuseAssets" xlink:title="ifrs-full_DepreciationRightofuseAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DepreciationRightofuseAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_DepreciationRightofuseAssets" xlink:type="arc" use="optional" order="72" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForProvisions" xlink:label="ifrs-full_AdjustmentsForProvisions" xlink:title="ifrs-full_AdjustmentsForProvisions" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForProvisions" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForProvisions" xlink:type="arc" use="optional" order="73" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_AdjustmentsForProvisionsForRisks" xlink:label="itw_AdjustmentsForProvisionsForRisks" xlink:title="itw_AdjustmentsForProvisionsForRisks" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="itw_AdjustmentsForProvisionsForRisks" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to itw_AdjustmentsForProvisionsForRisks" xlink:type="arc" order="74" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:title="ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:type="arc" use="optional" order="75" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:label="ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:title="ifrs-full_AdjustmentsForIncomeTaxExpense" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:type="arc" use="optional" order="76" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:title="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:type="arc" use="optional" order="77" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForSharebasedPayments" xlink:label="ifrs-full_AdjustmentsForSharebasedPayments" xlink:title="ifrs-full_AdjustmentsForSharebasedPayments" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForSharebasedPayments" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForSharebasedPayments" xlink:type="arc" use="optional" order="78" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:title="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:type="arc" use="optional" order="79" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:title="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:type="arc" use="optional" order="80" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:title="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:type="arc" use="optional" order="81" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:title="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:type="arc" use="optional" order="82" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:label="ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:title="ifrs-full_IncreaseDecreaseInWorkingCapital" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:type="arc" use="optional" order="83" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:title="ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" use="optional" order="84" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" xlink:label="ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" xlink:title="ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets" xlink:type="arc" use="optional" order="85" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:label="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:title="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:type="arc" use="optional" order="86" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:title="ifrs-full_CashFlowsFromUsedInInvestingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" use="optional" order="87" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:label="ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:title="ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings" xlink:type="arc" use="optional" order="88" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:label="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:title="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to itw_ProceedRepaymentsOfNetNonCurrentFinancialLiabilitiesClassifiedAsFinancingActivities" xlink:type="arc" order="89" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssuingShares" xlink:label="ifrs-full_ProceedsFromIssuingShares" xlink:title="ifrs-full_ProceedsFromIssuingShares" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProceedsFromIssuingShares" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_ProceedsFromIssuingShares" xlink:type="arc" use="optional" order="90" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:title="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" use="optional" order="91" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:title="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:type="arc" use="optional" order="92" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="213800VELZNZPB4AAD87-2021-12-31.xsd#itw_CashFlowFromAssetsSold" xlink:label="itw_CashFlowFromAssetsSold" xlink:title="itw_CashFlowFromAssetsSold" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="itw_CashFlowFromAssetsSold" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to itw_CashFlowFromAssetsSold" xlink:type="arc" order="93" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:title="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:type="arc" use="optional" order="94" xbrldt:closed="false" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceCostsPaidClassifiedAsOperatingActivities" xlink:label="ifrs-full_FinanceCostsPaidClassifiedAsOperatingActivities" xlink:title="ifrs-full_FinanceCostsPaidClassifiedAsOperatingActivities" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_FinanceCostsPaidClassifiedAsOperatingActivities" xlink:title="Definition : esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder to ifrs-full_FinanceCostsPaidClassifiedAsOperatingActivities" xlink:type="arc" use="optional" order="95" xbrldt:closed="false" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/CONTOECONOMICOCONSOLIDATO" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/CONTOECONOMICOCOMPLESSIVO" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/SITUAZIONEPATRIMONIALEFINANZIARIA" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/RENDICONTOFINANZIARIOCONSOLIDATO" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.itway.com/xbrl/role/RENDICONTOFINANZIARIOCONSOLIDATOParenthetical" />
</link:linkbase>