gear in WordNet English dictionary

1. equipment consisting of miscellaneous articles needed for a particular operation or sport etc.
   gear  paraphernalia  appurtenance 
   
2. a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
   gear  gear wheel  geared wheel  cogwheel 
   
3. 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"
   gearing  gear  geartrain  power train  train 
   
4. a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)
   gear  gear mechanism 
   

1. set the level or character of
   "She pitched her speech to the teenagers in the audience"
   gear  pitch