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Flap may refer to:

The arts[edit]


  • 5-lipoxygenase activating protein (FLAP)
  • Brouhaha, a general state of social agitation
  • Flap (aeronautics), a hinged surface on the trailing edge of an airplane wing
  • Flapping, the up-and-down motion of a helicopter rotor
  • Flapping, one of the basic mechanics of bird flight
  • Flap (surgery), a surgical technique involving movement of vascularized tissue
    • Free flap, a specific kind of surgical flap
  • Flap consonant, a sound produced by brief contact between the tongue and the roof of the mouth
    • Flapping, a process by which a /t/ or a /d/ before an unstressed vowel is pronounced as a flap consonant
  • Flap, any hinged plate often used as a cover or a simple one-way valve
    • Bum flap (or butt flap), a separately removable part of underwear (un)covering the buttocks
    • Mudflap, a guard for tires on automobiles
    • Pet door, a hinged flap that allows a cat or other small pet to enter or leave a room or building
    • Sluice or flap gate, a pressure driven water flow control device between a channel and other water body
  • Roof flap, an aerodynamic feature of race cars
  • Route flapping, when a router alternately advertises a destination network first via one route then another

See also[edit]