Dictionary.com
definitions
  • synonyms

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.
Show More

Origin of power brake

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018