ratch

Noun

WORDNET DICTIONARY

ratch(n = noun.artifact) rachet, ratchet - mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction; Array

is a kind of mechanical device

has parts: click, detent, dog, pawl, ratchet wheel

is a part of ratchet screwdriver, spiral ratchet screwdriver

ratch, n.

Same as Rotche. [1913 Webster]

ratch, n. [See Rack the instrument, Ratchet.].

A ratchet wheel, or notched bar, with which a pawl or click works. [1913 Webster]

ratch, n.
1 a ratchet.
2 a ratchet-wheel.

Etymology

perh. f. G Ratsche: cf. RATCHET

For further exploring for "ratch" in Webster Dictionary Online