Ratchet

Definition of Ratchet

Ratch´et   Pronunciation: ~ĕt
n.1.A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc.
2.A mechanism composed of a ratchet wheel, or ratch, and pawl. See Ratchet wheel, below, and 2d Ratch.
Ratchet brace
(Mech.) a boring brace, having a ratchet wheel and pawl for rotating the tool by back and forth movements of the brace handle.
Ratchet drill
a portable machine for working a drill by hand, consisting of a hand lever carrying at one end a drill holder which is revolved by means of a ratchet wheel and pawl, by swinging the lever back and forth.
Ratchet wheel
(Mach.) a circular wheel having teeth, usually angular, with which a reciprocating pawl engages to turn the wheel forward, or a stationary pawl to hold it from turning backward.

Related Words

cog, comb, crag, fang, harrow, jag, peak, pecten, projection, rake, sawtooth, snag, snaggle, spire, sprocket, spur, steeple, tooth
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Rat-tailed
Rat-tailed larva
Rat-tailed radish
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Rata
Ratability
Ratable
Ratafia
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Ratch
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Rateable
Ratel
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Ratify
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Ratio of a geometrical progression
Ratiocinate
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