rachet

Noun rachet has 1 sense

• rachet(n = noun.artifact) ratch, ratchet - mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction;
is a kind of mechanical device
has parts: click, detent, dog, pawl, ratchet wheel
is a part of ratchet screwdriver, spiral ratchet screwdriver