brake

Definition

A device used to slow or stop the motion of a wheel, or of a vehicle, usually by friction (although other resistive forces, such as electromagnetic fields or aerodynamic drag, can also be used); also, the controls or apparatus used to engage such a mechanism such as the pedal in a car.

Etymology

Origin uncertain; possibly from Middle Dutch or Middle Low German brake (“nose ring, curb, flax brake”), which according to Watkins is related to sense 4 and from Proto-Germanic *brekaną (“to break”).

Example Sentences

• "She slammed the brakes when she saw a child run in front of the car."
• "You’re pressing the brakes too hard—try just squeezing them."
• "Auxiliaries and ancillaries are comprehensive, and include a Westinghouse motor-driven recriprocating compressor used for locomotive braking and general service air, two rotary exhauster sets for train brakes when hauling passenger or fitted freight trains, and an oil-fired train heating boiler."