| Meaning | A mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle). |
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| Synonym | gear |
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| Narrower | first gear, first, low gear, low | The lowest forward gear ratio in the gear box of a motor vehicle |
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| gearset | A set of gears |
| high gear, high | A forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed |
| park | A gear position that acts as a parking brake |
| reverse, reverse gear | The gears by which the motion of a machine can be reversed |
| second gear, second | The gear that has the second lowest forward gear ratio in the gear box of a motor vehicle |
| steering gear | A gear that couples the steering wheel to the steering linkage of a motor vehicle |
| third gear, third | The third from the lowest forward ratio gear in the gear box of a motor vehicle |
| transmission, transmission system | The gears that transmit power from an automobile engine via the driveshaft to the live axle |
| Broader | mechanism | device consisting of a piece of machinery |
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| Spanish | marcha |
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| Catalan | marxa |
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