power brake
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.
Origin of power brake
First recorded in 1895–1900
Words nearby power brake
power,
power amplifier,
power assist,
power base,
power behind the throne,
power brake,
power brand,
power broker,
power cable,
power chain,
power cut