a part, as a disk, wheel, or section of a shaft, having cut teeth of such form, size, and spacing that they mesh with teeth in another part to transmit or receive force and motion.
an assembly of such parts.
one of several possible arrangements of such parts in a mechanism, as an automobile transmission, for affording different relations of torque and speed between the driving and the driven machinery, or for permitting the driven machinery to run in either direction: first gear; reverse gear.
a mechanism or group of parts performing one function or serving one purpose in a complex machine: steering gear.
implements, tools, or apparatus, especially as used for a particular occupation or activity; paraphernalia: fishing gear.
a harness, especially of horses.
Nautical.
the lines, tackles, etc., of a particular sail or spar.
the personal tools, clothing, and other possessions of a sailor.
portable items of personal property, including clothing; possessions: The campers keep all their gear in footlockers.
wearing apparel; clothing: The fashion pages of the Sunday paper are featuring the latest fall gear.
to prepare, adjust, or adapt to a particular situation, person, etc., in order to bring about satisfactory results: The producers geared their output to seasonal demands.
verb (used without object)
to fit exactly, as one part of gearing into another; come into or be in gear.
adjective
Slang. great; wonderful.
Verb Phrases
gear down,
Automotive.to shift the transmission of a vehicle to a lower gear: The truck driver geared down at the top of the hill.
to reduce in scope or intensity: With less income you'll have to gear down your spending habits.
gear up,
to make or get ready for a future event or situation: Insiders say the senator is gearing up to run for governor.
to get or put on equipment or clothing for a particular purpose: The hikers geared up for the long trek down the mountain.
to arouse or excite, as with enthusiasm or expectation: The employees were geared up for a hard battle with management over working hours.
Idioms
in gear,
Machinery.in the state in which gears are connected or meshed: The car is in gear.
in proper or active working order; functioning continuously without trouble: Every department in this company must be in gear at all times.
in/into high gear, in or into a state of utmost speed, activity, or efficiency: Military rearmament moved into high gear.
out of gear, Machinery. in the state in which gears are not connected or meshed: The engine is out of gear.
shift/switch gears, to change one's attitude, course of action, methods, etc., in an abrupt, dramatic, or unexpected manner: In the middle of the second act the play shifts gears from comedy to tragedy.
Origin of gear
1150–1200;Middle Englishgere < Old Norsegervi, gørvi; akin to Old Englishgearwe equipment
Related formsgear·less, adjectivere·gear, verbun·geared, adjectivewell-geared, adjective
c.1200, "fighting equipment," probably from Old Norse gervi "apparel," related to gerr "ready," and gerva "make ready," from Proto-Germanic *garwin- (cf. Old English gearwe "clothing, equipment, ornament;" Old High German garawi "clothing, dress," garawen "to make ready;" German gerben "to tan"). Meaning "toothed wheel in machinery" first attested 1520s. Slang for "male sex organs" from 1670s. British adjective slang sense of "stylish, excellent" first recorded 1951, from earlier that's the gear, expression of approval, 1925.
v.
c.1200, "to equip oneself for fighting; dress," probably from gear (n.). Related: Geared; gearing.
A wheel with teeth around its rim that mesh with the teeth of another wheel to transmit motion. Gears are used to transmit power (as in a car transmission) or change the direction of motion in a mechanism (as in a differential axle). Fixed ratios of speed in various parts of a machine is often established by the arrangement of gears.
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