Flap

• Flap (aircraft)
  Flap (aircraft)
  Flaps are hinged surfaces on the trailing edge of the wings of a fixed-wing aircraft. As flaps are extended, the stalling speed of the aircraft is reduced, which means that the aircraft can fly safely at slower speeds...
  
  , a hinged surface on the trailing edge of an airplane wing
• Roof flap
  Roof flap
  A roof flap is an aerodynamic feature of modern race cars, especially stock cars.The roof flaps serve as a situational spoiler. A race car's body is designed to optimize downforce, but if that body is spun so air is flowing in reverse, lift is generated instead of countered...
  
  , an aerodynamic feature of race cars
• Flapping, one of the basic mechanics of flight in birds
• Flap, any hinged plate often used as a cover or a simple one-way valve
  Valve
  A valve is a device that regulates the flow of a fluid by opening, closing, or partially obstructing various passageways. Valves are technically pipe fittings, but are usually discussed as a separate category....
  
  
  • Cat flap
    Cat flap
    A cat flap or cat door is a hinged flap set into a door, wall or window to allow cats to enter and exit a house on their own without needing a human to open the door, while offering a degree of protection against wind and rain entering the dwelling...
    
    , a hinged flap that allows a cat to enter or leave a room or building
  • Butt flap, a separately removable part of underwear (un)covering the buttocks
  • Sluice
    Sluice
    A sluice is a water channel that is controlled at its head by a gate . For example, a millrace is a sluice that channels water toward a water mill...
    
     or flap gate, a pressure driven water flow control device between a channel and other water body
• Flap consonant
  Flap consonant
  In phonetics, a flap or tap is a type of consonantal sound, which is produced with a single contraction of the muscles so that one articulator is thrown against another.-Contrast with stops and trills:...
  
  , a sound produced by brief contact between the tongue and the roof of the mouth
  • Intervocalic alveolar flapping
    Intervocalic alveolar flapping
    Intervocalic alveolar flapping is a phonological process found in many dialects of English, especially North American English and Australian English, by which prevocalic and surface as the alveolar tap after sonorants other than , , and .*after vowel: butter*after r: barter*after l: faculty...
    
    , a process by which a /t/ phoneme before an unstressed vowel is pronounced as a flap consonant
• Free flap, a surgical transfer of vascularised tissue
• Flap, a minor character from Little Nemo: Adventures in Slumberland
  Little Nemo: Adventures in Slumberland
  Little Nemo: Adventures in Slumberland, known in Japan as simply Little Nemo, is an award-winning animated film directed by Masami Hata and William T. Hurtz. Loosely based on the comic strip Little Nemo in Slumberland by Winsor McCay, the film went through a lengthy development process with a...
  
  
• Route flapping
  Route flapping
  In computer networking and telecommunications, route flapping occurs when a router alternately advertises a destination network via one route then another in quick sequence...
  
  , when a router alternately advertises a destination network first via one route then another
• Brouhaha, a general state of social agitation
• 5-lipoxygenase activating protein
  5-lipoxygenase activating protein
  5-Lipoxygenase activating protein, or FLAP, is an enzyme necessary for the activation of 5-lipoxygenase and therefore for the production of leukotrienes. It is bound to the nuclear membrane. FLAP is an integral membrane protein of the nucleus membrane...
  
   (FLAP)

See also

• Flapper
  Flapper
  The term flapper in the 1920s referred to a "new breed" of young women who wore short skirts, bobbed their hair, listened to the new jazz music, and flaunted their disdain for what was then considered acceptable behavior...
  
  , a woman who wore a certain style of clothes in the 1920s
• Flapping races, unlicensed horse rains in the UK and Ireland