Gear
A gear or cogwheel is a rotating machine part having cut like teeth, or cogs, which mesh with another toothed part to transmit torque. Geared devices can change the speed, torque, and direction of a power source. Gears almost always produce a change in torque, creating a mechanical advantage, through their gear ratio, and thus may be considered a simple machine. The teeth on the two meshing gears all have the same shape. Two or more meshing gears, working in a sequence, are called a gear train or a transmission. A gear can mesh with a linear toothed part, called a rack, producing translation instead of rotation.
The gears in a transmission are analogous to the wheels in a crossed, belt pulley system. An advantage of gears is that the teeth of a gear prevent slippage.
When two gears mesh, if one gear is bigger than the other, a mechanical advantage is produced, with the rotational speeds, and the torques, of the two gears differing in proportion to their diameters.
In transmissions with multiple gear ratios—such as bicycles, motorcycles, and cars—the term “gear” as in “first gear” refers to a gear ratio rather than an actual physical gear. The term describes similar devices, even when the gear ratio is continuous rather than discrete, or when the device does not actually contain gears, as in a continuously variable transmission.
Cog (noun)
A tooth on a gear.
Cog (noun)
A gear; a cogwheel.
Cog (noun)
An unimportant individual in a greater system.
Cog (noun)
A projection or tenon at the end of a beam designed to fit into a matching opening of another piece of wood to form a joint.
Cog (noun)
One of the rough pillars of stone or coal left to support the roof of a mine.
Cog (noun)
A ship of burden, or war with a round, bulky hull.
Cog (noun)
A trick or deception; a falsehood.
Cog (noun)
A small fishing boat.
Cog (verb)
To furnish with a cog or cogs.
Cog (verb)
To load (a die) so that it can be used to cheat.
Cog (verb)
To cheat; to play or gamble fraudulently.
Cog (verb)
To seduce, or draw away, by adulation, artifice, or falsehood; to wheedle; to cozen; to cheat.
Cog (verb)
To obtrude or thrust in, by falsehood or deception; to palm off.
“to cog in a word”
Gear (noun)
Equipment or paraphernalia, especially that used for an athletic endeavor.
Gear (noun)
Clothing; garments.
Gear (noun)
Goods; property; household items.
Gear (noun)
A wheel with grooves (teeth) engraved on the outer circumference, such that two such devices can interlock and convey motion from one to the other; a gear wheel.
“cog|cogwheel|gearwheel”
Gear (noun)
A particular combination or choice of interlocking gears, such that a particular gear ratio is achieved.
Gear (noun)
A configuration of the transmission of a motor car so as to achieve a particular ratio of engine to axle torque.
Gear (noun)
Recreational drugs, including steroids.
Gear (noun)
Stuff.
Gear (noun)
Business matters; affairs; concern.
Gear (noun)
Anything worthless; nonsense; rubbish.
Gear (verb)
To provide with gearing; to fit with gears in order to achieve a desired gear ratio.
Gear (verb)
To be in, or come into, gear.
Gear (verb)
To dress; to put gear on; to harness.
Gear (verb)
To design or devise (something) so as to be suitable (for a particular type of person or a particular purpose).
“This shop is not really geared towards people of our age.”
“They have geared the hotel mainly at tourists.”
Gear (adjective)
great or fantastic
Cog (noun)
a wheel or bar with a series of projections on its edge, which transfers motion by engaging with projections on another wheel or bar
“the cogs and springs of a watch”
Cog (noun)
each of the projections on a cog
“applewood was the favourite material for the cogs or teeth of a cogwheel”
Cog (noun)
a broadly built medieval ship with a rounded prow and stern.
Cog (verb)
copy (someone else’s work) illicitly or without acknowledgement
“he’s away cogging his homework from Aggie’s wee girl”
Gear (noun)
a toothed wheel that works with others to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle) and the speed of the driven parts (the wheels)
“a racing bike with ten-speed gears”
Gear (noun)
a particular setting of engaged gears
“he was belting along in fifth gear”
Gear (noun)
used in reference to the level of effort or intensity expended in an activity or undertaking
“the play moves down a gear whenever he walks off stage”
“now the champions moved up a gear”
“from this weekend, the campaign is expected to step up a gear”
Gear (noun)
equipment or apparatus that is used for a particular purpose
“camping gear”
Gear (noun)
clothing, especially of a specified kind
“designer gear”
Gear (noun)
personal possessions and clothes
“I told her to come back to my place with all her gear”
Gear (noun)
illegal drugs
“Murray got him some gear”
Gear (verb)
design or adjust the gears in a machine to give a specified speed or power output
“the vehicle’s geared too high for serious off-road use”