Definition of air brake in English:

air brake

Line breaks: air brake

noun

  • 1A brake worked by air pressure.
    More example sentences
    • There was also an air brake gauge and emergency brake valve in the caboose.
    • The most common mechanical braking device was the air brake.
    • It has been determined that a trespasser riding the Burlington Northern Santa Fe train closed the air brake valves between the railcars and opened the coupler.
  • 2A movable flap or other device on an aircraft to reduce its speed.
    More example sentences
    • The large air brake, which is used in landing and in combat manoeuvres, is located on top of the fuselage.
    • The plane still retained its original British air brake system and this caused Lyle problems during ground operations.
    • It is to be remembered, incidentally, that these flaps are not air brakes.

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Pronunciation: kərf
noun
a slit made by cutting with a saw