Gear

What does GEAR mean?

1. verb

   set the level or character of

   “She pitched her speech to the teenagers in the audience”

2. noun

   a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion

3. noun

   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”

4. noun

   a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)

Definitions from WordNet 3.1, Princeton University.