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

Around the same time, some tapes made headlines for their value, encouraging Renoir to go full throttle.

From Los Angeles Times • Apr. 23, 2026

At the moment, this is set at 250kW, rather than the maximum recharge limit of 350kW which can be applied when a driver has lifted off the throttle and/or is braking.

From BBC • Apr. 20, 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

"We have seen some quotes where the underwriter has actually warranted that the vessel goes through at... full throttle," said Smith.

From Barron's • Mar. 29, 2026

The engineer on the observation train laid a hand on the throttle.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown