throttle

American  

[throt-l] / ˈθrɒt l /

noun

1. Also called throttle lever.  a lever, pedal, handle, etc., for controlling or manipulating a throttle valve.

2. throttle valve.

3. the throat, gullet, or windpipe, as of a horse.

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verb (used with object)

throttled, throttling

1. to stop the breath of by compressing the throat; strangle.

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. Machinery.

   1. to obstruct or check the flow of (a fluid), as to control the speed of an engine.

   2. to reduce the pressure of (a fluid) by passing it from a smaller area to a larger one.

idioms

1. at full throttle, at maximum speed.

throttle British  

/ ˈθrɒtəl /

noun

1. Also called: throttle valve.  any device that controls the quantity of fuel or fuel and air mixture entering an engine

2. an informal or dialect word for throat

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verb

1. to kill or injure by squeezing the throat

2. to suppress

   to throttle the press

3. to control or restrict (a flow of fluid) by means of a throttle valve

Other Word Forms

• throttler
  noun
• unthrottled
  adjective

Etymology

Origin of throttle

1350–1400; (v.) Middle English throtelen, frequentative of throten to cut the throat of (someone), strangle, derivative of throat; (noun) probably diminutive of Middle English throte throat; compare German Drossel

Explanation

The throttle of an engine controls the fuel going in, and if you're going at full throttle, you'd better hang onto your hat. You can think of a throttle as a throat, and the two words may be related. But as with a throat, if you block a throttle, something bad is likely to happen. You can throttle your car — cut off the air to the engine, also known as applying the choke — and you might stall it out. You can also throttle a person — the image is that you grab the person by the throat and cut off his air. It's much better to use throttle figuratively: when you crushed your opponent at tennis, you could say "you throttled her" — but nobody really got hurt.

Example Sentences

Class 2 e-bikes have a throttle that allows users to operate them without pedaling, but the electric motors top out at 20 mph.

From Los Angeles Times • May 12, 2026

But as the EV age dawned, helped by top-down policy such as generous subsidies, Chinese firms hit the throttle.

From Barron's • Apr. 27, 2026

O’Regan told MarketWatch that as AI “usage accelerates and agents proliferate,” overwhelming demand for tokens is putting pressure on AI companies to throttle back usage and may potentially even cause outages.

From MarketWatch • Apr. 18, 2026

But the U.S. measure freed up tanker storage, which could relieve Russia from having to shut down wells or throttle more production.

From The Wall Street Journal • Apr. 9, 2026

By now, the excitement in the kitchen was at full throttle.

From "Bunnicula" by Deborah Howe and James Howe