noun \ˈgir\

: supplies, tools, or clothes needed for a special purpose

: a toothed wheel in a machine

: a part that connects the engine of a vehicle or the pedals of a bicycle to the wheels and controls the speed at which the wheels turn

Full Definition of GEAR

a :  clothing, garments
b :  movable property :  goods
:  equipment, paraphernalia <fishing gear>
a :  the rigging of a ship or boat
b :  the harness especially of horses
dial chiefly British :  absurd talk :  nonsense
dial chiefly British :  doings
a (1) :  a mechanism that performs a specific function in a complete machine <steering gear> (2) :  a toothed wheel (3) :  working relation, position, order, or adjustment <got her career in gear> (4) :  a level or pace of functioning <kicked their performance into high gear>
b :  one of two or more adjustments of a transmission (as of a bicycle or motor vehicle) that determine mechanical advantage, relative speed, and direction of travel
gear·less \-ləs\ adjective

Examples of GEAR

  1. I somehow managed to pack all my gear into one suitcase.
  2. soldiers in full combat gear
  3. a complicated arrangement of gears and shafts
  4. a car with four forward gears
  5. Halfway up the hill, my bike slipped out of gear.

Illustration of GEAR

Origin of GEAR

Middle English gere, from Old Norse gervi, gǫrvi; akin to Old English gearwe equipment, clothing, gearu ready — more at yare
First Known Use: 14th century



: to make (something) suitable for a particular use or type of person

Full Definition of GEAR

transitive verb
a :  to provide (as machinery) with gearing
b :  to connect by gearing
a :  to make ready for effective operation
b :  to adjust so as to match, blend with, or satisfy something <gearing wages to productivity>
intransitive verb
a British of machinery :  to be in gear :  mesh
b :  shift 1c <gear down>
:  to become adjusted so as to match, blend, or harmonize

First Known Use of GEAR



noun    (Concise Encyclopedia)

Machine component consisting of a toothed wheel attached to a rotating shaft. Gears operate in pairs, the teeth of one engaging the teeth of a second, to transmit and modify rotary motion and torque. To transmit motion smoothly, the contacting surfaces of gear teeth must be carefully shaped to a specific profile. The smaller of a gear pair is often known as the pinion. If the pinion is on the driving shaft, the pair acts to reduce speed and to amplify torque; if the pinion is on the driven shaft, the pair acts to increase speed and reduce torque.


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