What is the meaning of gear?

noun

• A toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion.
  • synonyms: gear wheel, geared wheel, cogwheel
• Wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed.
  • usage: "the fool got his tie caught in the geartrain"
  • synonyms: gearing, geartrain, power train, train
• A mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle.
  • synonyms: gear mechanism
• Equipment consisting of miscellaneous articles needed for a particular operation or sport etc..
  • synonyms: paraphernalia, appurtenance

verb

• Set the level or character of.
  • usage: "She pitched her speech to the teenagers in the audience"
  • synonyms: pitch