English

Definition of ratchet noun from the Oxford Advanced Learner's Dictionary

 

ratchet

 noun
noun
BrE BrE//ˈrætʃɪt//
 
; NAmE NAmE//ˈrætʃɪt//
 
 
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a wheel or bar with teeth along the edge and a metal piece that fits between the teeth, allowing movement in one direction only Word Origin mid 17th cent.: from French rochet, originally denoting a blunt lance head, later in the sense ‘bobbin, ratchet’; related to the base of archaic rock ‘quantity of wool on a distaff for spinning’.
See the Oxford Advanced American Dictionary entry: ratchet

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