power brake

noun

1. 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.

Word History and Origins

Origin of power brake¹

First recorded in 1895–1900

Example Sentences

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

Read more on Seattle Times

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

Read more on Fox News

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

Read more on The Wall Street Journal

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

Read more on Washington Post

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

Read more on Washington Post