rachet
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction • Syn: ratchet, ratch • Derivationally related forms: ratchet (for: ratchet) • Hypernyms: mechanical device • Part Holonyms: spiral ratchet screwdriver, ratchet screwdriver • Part Meronyms: pawl, detent, click, dog, ratchet wheel
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