gear

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gear
  • noun
    A toothed wheel that works with others to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle) and the speed of the driven parts (the wheels) (a racing bike with ten-speed gears)
    Equipment or apparatus that is used for a particular purpose. (camping gear)
    verb
    Design or adjust the gears in a machine to give a specified speed or power output. (the vehicle's geared too high for serious off-road use)

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