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English definition of “treadmill”

treadmill

noun uk   /ˈtred.mɪl/ us  

treadmill noun (REPEATED WORK)

[S] any type of repeated work that is boring and makes you feel tired and seems to have no positive effect and no end: There were days when child-rearing seemed like an endless treadmill of feeding, washing, and nappy-changing.Employment status and types of workBoredom, tedium and boring things

treadmill noun (EXERCISE MACHINE)

[C] an exercise machine that consists of a moving strip or two step-like parts on which you walk without moving forwardGenerating and pumping devicesExercising and training

treadmill noun (WHEEL)

[C] a wide wheel turned by the weight of people climbing on steps around its edge, used in the past to provide power for machines or, more usually, as a punishment for prisonersPunishing by causing painHitting and beatingPunishing and punishments
(Definition of treadmill from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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