gear wheel

gear·wheel also gear wheel  (gîrhwl, -wl)

n.

A wheel with a toothed rim.

Thesaurus

Noun

1.

gear wheel - a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion cogwheel, gear, geared wheel bevel gear, pinion and crown wheel, pinion and ring gear - gears that mesh at an angle cog, sprocket - tooth on the rim of gear wheel escape wheel - gear that engages a rocking lever pinion - a gear with a small number of teeth designed to mesh with a larger wheel or rack epicyclic gear, planet gear, planet wheel, planetary gear - an outer gear that revolves about a central sun gear of an epicyclic train rack and pinion - a wheel gear (the pinion) meshes with a toothed rack; converts rotary to reciprocating motion (and vice versa) spur gear, spur wheel - gear wheels that mesh in the same plane sun gear - the central gear in an epicyclic train tooth - one of a number of uniform projections on a gear wheel - 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) worm gear - 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 worm wheel - gear with the thread of a worm