English noun: ratch | |||
1. | ratch (artifact) mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction | ||
Synonyms | rachet, ratchet | ||
Broader (hypernym) | mechanical device | ||
Part holonym | click, detent, dog, pawl, ratchet wheel | ||
Part meronym | ratchet screwdriver, spiral ratchet screwdriver | ||