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air brake

a brake or system of brakes operated by compressed air.
Aeronautics. a device for reducing the air speed of an aircraft by increasing its drag.
a device for stopping the sails of a windmill by disrupting the flow of air around them.
Origin of air brake
1870-75, Americanism Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for air-brake
Historical Examples
  • Ever notice how human an engine sounds when it stops after a long run and the air-brake apparatus begins to pant?

    Homeburg Memories George Helgesen Fitch
  • There was perfect silence but for the pumping of the air-brake on the engine.

    Red Men and White Owen Wister
  • Then, judging the time to be fully ripe, he ducked under the Rosemary to "bleed" the air-brake.

    A Fool For Love Francis Lynde
  • Callahan was seventeen, with hair like a sunset, and a mind quick as an air-brake.

    The Nerve of Foley Frank H. Spearman
  • However, Westinghouse was not discouraged, but continued to experiment, and the air-brake as we have it to-day was the result.

    American Men of Mind Burton E. Stevenson
  • Written by an air-brake Instructor who knows just what is needed.

    Aviation Engines Victor Wilfred Pag
  • He took a grip on my fingers that numbed them as if they had been caught in an air-brake, and disappeared.

    The Great K. & A. Robbery Paul Liechester Ford
  • Endorsed and used by air-brake instructors and examiners on nearly every railroad in the United States.

    Aviation Engines Victor Wilfred Pag
  • He checked—and with a scream from the flanges the special, shaking in the clutches of the air-brake, swung the curve.

    Held for Orders Frank H. Spearman
  • The air-brake has changed engine driving materially in the last few years, and a word or two concerning it should be said.

    How to Become an Engineer Frank W. Doughty
British Dictionary definitions for air-brake

air brake

a brake operated by compressed air, esp in heavy vehicles and trains
Also called dive brake. an articulated flap or small parachute for reducing the speed of an aircraft
a rotary fan or propeller connected to a shaft to reduce its speed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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