airbrake

Noun
  1. A small parachute or articulated flap to reduce the speed of an aircraft (synset 102688714)
    is a type of: constraint, restraint - a device that retards something's motion
    same as: dive brake
  2. A vehicular brake that operates by compressed air;
    Especially for heavy vehicles (synset 102688560)
    is a type of: power brake - a brake on an automobile that magnifies a small force applied to the brake pedal into a proportionately larger force applied to slow or stop the vehicle
    is a part of: automotive vehicle, motor vehicle - a self-propelled wheeled vehicle that does not run on rails

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