| bevel gear |
a gear with teeth angled or beveled so that it meshes with another gear whose shaft is at an angle of less than 180 degrees to its own shaft. |
| differential gear |
an arrangement of gears on the rear axle of an automobile that allows one wheel to turn faster than another during turns. |
| gear lever |
(chiefly British) a lever used to change the arrangement of gears, esp. in an automobile transmission; gearshift. |
| gear ratio |
the relationship between the speeds of two gears. |
| gear stick |
(chiefly British) a lever used to change the arrangement of gears, esp. in an automobile transmission; gearshift. |
| gear up |
to make preparations; get ready for. |
| gearwheel |
a wheel with a toothed edge in a system of gears; cogwheel. |
| ghost gear |
fishing gear that is lost or illegally dumped into the oceans by commercial fishing companies. |
| landing gear |
the wheels or pontoons of an aircraft designed to enable it to move on land or water when not airborne. |
| planet gear |
a gear that meshes with and describes a circular path around another gear, esp. in an epicyclic train; planet wheel. |
| spur gear |
a gear wheel with teeth that are cut parallel to the axis of rotation. |
| worm gear |
a mechanism consisting of a shaft with a helical thread that meshes with a toothed wheel, usu. set at right angles to each other. [2 definitions] |