# Flap

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> Source: https://en.wikipedia.org/wiki/Flap
> Source revision: 1201811704
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**Flap** may refer to:

## Arts, entertainment, and media

- [*Flap* (film)](/source/Flap_(film)), a 1970 American film
- Flap, a boss character in the arcade game *[Gaiapolis](/source/Gaiapolis)*
- Flap, a minor character in the film *[Little Nemo: Adventures in Slumberland](/source/Little_Nemo:_Adventures_in_Slumberland)*

## Biology and healthcare

- [Flap (surgery)](/source/Flap_(surgery)), a surgical technique involving movement of vascularized tissue - [Free flap](/source/Free_flap), a specific kind of surgical flap
- [Flapping tremor](/source/Flapping_tremor) is a medical condition, also called asterixis
- [5-lipoxygenase activating protein](/source/5-lipoxygenase_activating_protein) (FLAP)

## Computing and networks

- The phenomenon of some variable or resource [oscillating](/source/Oscillation) or alternating rapidly between two [states](/source/State_(computer_science)) - [Route flapping](/source/Route_flapping), when a network router flips between different routes - [Link flap](/source/Link_flap), errant behavior in a communications link

## Engineering and design

- [Flap (aeronautics)](/source/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](/source/Helicopter_rotor#Fully_articulated)
- Flap, any hinged plate often used as a cover or a simple one-way [valve](/source/Valve) - [Sluice](/source/Sluice) or flap gate, a pressure driven water flow control device between a channel and other water body - [Bum flap](/source/Bum_flap) (or butt flap), a separately removable part of underwear (un)covering the buttocks - [Mudflap](/source/Mudflap), a guard for tires - [Pet door](/source/Pet_door) or pet flap
- [Roof flap](/source/Roof_flap), an aerodynamic feature of race cars

## Linguistics

- [Flap consonant](/source/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](/source/Flapping), a process by which a /t/ or a /d/ before an unstressed vowel is pronounced as a flap consonant

## Other uses

- Flapping, one of the basic mechanics of [bird flight](/source/Bird_flight#Basic_mechanics_of_bird_flight)

- Hand flapping, a common form of [self-stimulatory behaviour](/source/Stimming)

## See also

- [Flapper (disambiguation)](/source/Flapper_(disambiguation))

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Adapted from the Wikipedia article [Flap](https://en.wikipedia.org/wiki/Flap) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Flap?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.