Ratchet

مترادف و متضاد ratchet

1. noun A thin, circular body that turns on an axis
   Synonyms: catch, sprocket, sprocket wheel, cogwheel
2. verb Move by degrees in one direction only
   Synonyms: rachet up, ratchet down
3. noun Mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction
   Synonyms: rachet, ratch