Flap

Flap may refer to:

Arts, entertainment, and media

Biology and healthcare

Computing and networks

  • The phenomenon of some variable or resource oscillating or alternating rapidly between two states
    • Route flapping, when a network router flips between different routes
    • Link flap, errant behavior in a communications link

Engineering and design

  • Flap (aeronautics), a lift augmentation device on an airplane wing, often near the trailing edge
  • Flapping, the up-and-down motion of a helicopter rotor
  • Flap, any hinged plate often used as a cover or a simple one-way valve
    • Sluice or flap gate, a pressure driven water flow control device between a channel and other water body
    • Bum flap (or butt flap), a separately removable part of underwear (un)covering the buttocks
    • Mudflap, a guard for tires
    • Pet door or pet flap
  • Roof flap, an aerodynamic feature of race cars

Linguistics

  • Flap consonant, a sound produced by brief contact between one articulator (such as the tongue) and another (such as 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

Other uses

See also

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