WordReference Random House Learner's Dictionary of American English © 2020
throt•tle /ˈθrɑtəl/USA pronunciation   n., v.,  -tled, -tling. 
n. [countable]
  1. Mechanical Engineering
    • the valve in an engine that controls the amount of fuel entering the cylinders.
    • the lever that controls this valve.

  1. [+ object] to choke (someone) by squeezing the throat;
  2. to reduce the speed of, by or as if by using a throttle: [no object]The pilot throttled back on her engines.[+ object]She throttled her engines and reduced height.
  1. Idiomsat full throttle, at maximum speed or effort:He went after the car at full throttle.

throt•tler, n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2020
throt•tle  (throtl),USA pronunciation n., v.,  -tled, -tling. 
  1. Mechanical EngineeringAlso called  throttle lever. a lever, pedal, handle, etc., for controlling or manipulating a throttle valve.
  2. Mechanical EngineeringSee  throttle valve. 
  3. the throat, gullet, or windpipe, as of a horse.
  4. at full throttle, at maximum speed.

  1. to stop the breath of by compressing the throat;
  2. to choke or suffocate in any way.
  3. to compress by fastening something tightly around.
  4. to silence or check as if by choking:His message was throttled by censorship.
  5. [Mach.]
    • Mechanical Engineeringto obstruct or check the flow of (a fluid), as to control the speed of an engine.
    • Mechanical Engineeringto reduce the pressure of (a fluid) by passing it from a smaller area to a larger one.
throttler, n. 
  • 1350–1400; (verb, verbal) Middle English throtelen, frequentative of throten to cut the throat of (someone), strangle, derivative of throat; (noun, nominal) probably diminutive of Middle English throte throat; compare German Drossel


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