AIR BRAKE


Meaning of AIR BRAKE in English

noun

1. : a brake operated by a piston driven by compressed air from reservoirs connected to brake cylinders by triple valves which upon reduction of air pressure in the brake pipe automatically admit air from the reservoirs into the brake cylinder

2. : a surface (as an aileron) that may be projected into the airstream for increasing the resistance and lowering the speed of an airplane

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.