English Reference

Word

throttle

Phoneticsthrot·tle

US/ˈθɹɑtəɫ/

UK/θɹˈɒtəl/

Definitions

01engine control

B2 · Technical

n. the lever or pedal you use to control the speed of an engine, like in a car or plane.

n. a valve or the associated control mechanism (lever/pedal) that regulates the flow of fuel or power to an engine.

“The pilot pushed the throttle forward to gain speed for takeoff.”

“As the vehicle approached the steep incline, the driver applied full throttle to maintain momentum against the increasing resistance.”

Synonyms

acceleratorgas pedal

03to limit or slow down

C1 · Computing

v. to intentionally slow something down, like an internet connection or a business process.

v. to deliberately reduce the speed or efficiency of a process, particularly in computing or economics.

“The phone company might throttle your data speed if you use too much.”

“Network administrators often throttle bandwidth for non-essential services during peak hours to ensure that critical applications remain responsive.”

Technical

Synonyms

Antonyms

04the windpipe

C2 · Medicine

n. an old word for the throat or windpipe.

n. the trachea or windpipe; now largely obsolete in medical contexts.

“The old book described how the smoke felt hot against his throttle.”

“In nineteenth-century anatomical texts, the term throttle was occasionally employed to describe the upper portion of the respiratory tract.”

Archaic

Synonyms

tracheawindpipe

Real-World Examples

“The Amazon LEO constellation has had to throttle back production of satellites because few of the dozens of launches it booked half a decade ago are ready.”
Ars Technica · 17 Aug 2026
“In the past, some Samsung phones have throttled by more than half when heating up.”
Ars Technica · 14 Aug 2026
“Using the phone app, you can switch between Class 2 (assist or throttle up to 20 mph/32kmph) or Class 3 (no throttle, assist up to 28 mph/45 kmph).”
Ars Technica · 5 Aug 2026
“But the AI isn't programmed to take in all of these variables while it's trying to optimize braking/throttle/energy-recovery.”
Ars Technica · 20 Jul 2026

Etymology

From Middle English *throtel, diminutive of throte (“throat”), equivalent to throat + -le. Compare German Drossel (“throttle”). More at throat.

From Middle English throtlen (“to choke, strangle, suffocate”), from the noun (see above). Compare German erdrosseln (“to strangle, choke, throttle”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domain

Anatomy

This entry

Level
C1 · Advanced
Frequency
Frequent
Updated

Scan code

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English Reference