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English definition of “ratchet”


noun [C]     /ˈrætʃ.ɪt/
a part of a machine that allows movement in one direction only. It is usually a wheel with teeth-like parts that either slide over or lock against the free end of a bar.Machine parts
(Definition of ratchet noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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