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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Throt·tle n.
 1. The windpipe, or trachea; the weasand.
 2. Steam Engine The throttle valve.
 Throttle lever Steam Engine, the hand lever by which a throttle valve is moved, especially in a locomotive.
 Throttle valve Steam Engine, a valve moved by hand or by a governor for regulating the supply of steam to the steam chest. In one form it consists of a disk turning on a transverse axis.

From: WordNet (r) 2.0

 throttle valve
      n : a valve that regulates the supply of fuel to the engine
          [syn: accelerator, throttle]