usage: a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
2. gearing, gear, geartrain, power train, train, wheelwork
usage: wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed; "the fool got his tie caught in the geartrain"
3. gear, gear mechanism, mechanism
usage: a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)
4. gear, paraphernalia, appurtenance, equipment
usage: equipment consisting of miscellaneous articles needed for a particular operation or sport etc.
Verb
1. gear, pitch, adapt, accommodate
usage: set the level or character of; "She pitched her speech to the teenagers in the audience"