gear
English Thesaurus
1. a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion (noun.artifact)
| hypernym | : | wheel, |
| definition | : | a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines) (noun.artifact) |
| hyponym | : | escape wheel, |
| definition | : | gear that engages a rocking lever (noun.artifact) |
| hyponym | : | pinion, |
| definition | : | a gear with a small number of teeth designed to mesh with a larger wheel or rack (noun.artifact) |
| hyponym | : | rack and pinion, |
| definition | : | a wheel gear (the pinion) meshes with a toothed rack; converts rotary to reciprocating motion (and vice versa) (noun.artifact) |
| hyponym | : | spur gear, spur wheel, |
| definition | : | gear wheels that mesh in the same plane (noun.artifact) |
| hyponym | : | sun gear, |
| definition | : | the central gear in an epicyclic train (noun.artifact) |
| hyponym | : | worm gear, |
| definition | : | gear consisting of a shaft with screw thread (the worm) that meshes with a toothed wheel (the worm wheel); changes the direction of the axis of rotary motion (noun.artifact) |
| hyponym | : | worm wheel, |
| definition | : | gear with the thread of a worm (noun.artifact) |
| part holonym | : | cog, sprocket, |
| definition | : | tooth on the rim of gear wheel (noun.artifact) |
| part holonym | : | tooth, |
| definition | : | one of a number of uniform projections on a gear (noun.artifact) |
2. equipment consisting of miscellaneous articles needed for a particular operation or sport etc. (noun.artifact)
| hypernym | : | equipment, |
| definition | : | an instrumentality needed for an undertaking or to perform a service (noun.artifact) |
| hyponym | : | kit, outfit, |
| definition | : | gear consisting of a set of articles or tools for a specified purpose (noun.artifact) |
| hyponym | : | regalia, |
| definition | : | paraphernalia indicative of royalty (or other high office) (noun.artifact) |
| hyponym | : | rig, |
| definition | : | gear (including necessary machinery) for a particular enterprise (noun.artifact) |
| hyponym | : | rigging, tackle, |
| definition | : | gear consisting of ropes etc. supporting a ship's masts and sails (noun.artifact) |
3. a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle) (noun.artifact)
| hypernym | : | mechanism, |
| definition | : | device consisting of a piece of machinery; has moving parts that perform some function (noun.artifact) |
| hyponym | : | first, first gear, low, low gear, |
| definition | : | the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving (noun.artifact) |
| hyponym | : | gearset, |
| definition | : | a set of gears (noun.artifact) |
| hyponym | : | high, high gear, |
| definition | : | a forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed (noun.artifact) |
| hyponym | : | park, |
| definition | : | a gear position that acts as a parking brake (noun.artifact) |
| hyponym | : | reverse, reverse gear, |
| definition | : | the gears by which the motion of a machine can be reversed (noun.artifact) |
| hyponym | : | second, second gear, |
| definition | : | the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle (noun.artifact) |
| hyponym | : | steering gear, |
| definition | : | a gear that couples the steering wheel to the steering linkage of a motor vehicle (noun.artifact) |
| hyponym | : | third, third gear, |
| definition | : | the third from the lowest forward ratio gear in the gear box of a motor vehicle (noun.artifact) |
| hyponym | : | transmission, transmission system, |
| definition | : | the gears that transmit power from an automobile engine via the driveshaft to the live axle (noun.artifact) |
4. wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed (noun.artifact)
| hypernym | : | wheelwork, |
| definition | : | mechanical device including an arrangement of wheel in a machine (especially a train of gears) (noun.artifact) |
| hyponym | : | epicyclic gear train, epicyclic train, |
| definition | : | a system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axis (noun.artifact) |
| hyponym | : | reduction gear, |
| definition | : | gearing that reduces an input speed to a slower output speed (noun.artifact) |
| part meronym | : | engine, |
| definition | : | motor that converts thermal energy to mechanical work (noun.artifact) |
5. set the level or character of (verb.change)
| hypernym | : | accommodate, adapt, |
| definition | : | make fit for, or change to suit a new purpose (verb.change) |
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