Crossword clues for Used. 3 lettersAnswerClueUSEPurpose or object.USEPlyUSEOne of WD-40's manyUSE__ your head!: "Think!"USEUtilityUSEMileageUSEDo something withUSEThing a thing doesUSEPut to the testUSEPut to good __USEActivateUSEImplementUSECause of wear and tearUSEPractical applicationUSEBring to bearUSEWhat's the ___? (quitter's comment)USEPut into playUSEKind of taxUSEFunctionalityUSENot leave on the shelfUSENot leave, with "up"USEPut mileage onUSEGet some good out ofUSE__ it or lose itUSECommon practiceUSEResulting goodUSEEnd __USEFair __ (copyright law concept)USEDraw onUSEGet value fromUSEConsumptionUSEPlay for a pawnUSENeed an intervention, sayUSEIt's no ___!USEWear and tear causeUSENot wasteUSEMooch off ofUSEPut into serviceUSEDepleteUSEEmploymentUSEBe onUSEFair ___USENot squanderUSETake habituallyUSEPut in serviceUSEFinish, with "up"USETry outUSEWork withUSEWieldUSEHabituate.