set the level or character of
a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
equipment consisting of miscellaneous articles needed for a particular operation or sport etc.
soreness or irritation of the skin caused by friction
wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)