power brake

American

noun

an automotive brake set by pressure from some power source, as a compressed-air reservoir, in proportion to a smaller amount of pressure on the brake pedal.

Etymology

Origin of power brake

First recorded in 1895–1900

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If the power brakes fail, the brakes would still work without the power assist.

From Seattle Times

It also has a 3-speed automatic transmission, power steering, power brakes and air conditioning, making it a consummate coastal cruiser.

From Fox News

It has no air conditioning and no seat belts, but it does have power steering and power brakes.

From The Wall Street Journal

The power brake vacuum pump in the models can degrade and make it difficult to stop, according to the agency.

From Washington Post

Without power steering or power brakes, Holcy muscled the truck to the side of the highway.

From Washington Post

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023