|n.||1.||Anything broad and limber that hangs loose, or that is attached by one side or end and is easily moved; |
|2.||A hinged leaf, as of a table or shutter.|
|3.||The motion of anything broad and loose, or a stroke or sound made with it; |
|4.||(Far.) A disease in the lips of horses.|
|5.||(Aeronautics) a movable part of an airplane wing, used to increase lift or drag, especially when taking off or landing. used often in the plural.|
|v. t.||1.||To beat with a flap; to strike.|
|2.||To move, as something broad and flaplike; |
|v. i.||1.||To move as do wings, or as something broad or loose; to fly with wings beating the air.|
|2.||To fall and hang like a flap, as the brim of a hat, or other broad thing.|
|Noun||1.||flap - any broad thin and limber covering attached at one edge; hangs loose or projects freely; "he wrote on the flap of the envelope"|
|2.||flap - an excited state of agitation; "he was in a dither"; "there was a terrible flap about the theft"|
|3.||flap - the motion made by flapping up and down|
|4.||flap - a movable piece of tissue partly connected to the body|
|5.||flap - a movable airfoil that is part of an aircraft wing; used to increase lift or drag|
|Verb||1.||flap - move in a wavy pattern or with a rising and falling motion; "The curtains undulated"; "the waves rolled towards the beach"|
|2.||flap - move noisily; "flags flapped in the strong wind"|
|3.||flap - move with a thrashing motion; "The bird flapped its wings"; "The eagle beat its wings and soared high into the sky"|
|4.||flap - move with a flapping motion; "The bird's wings were flapping"|
|5.||flap - make a fuss; be agitated|
|6.||flap - pronounce with a flap, of alveolar sounds|
|1.||FLAP - A symbolic mathematics package for IBM 360.|
["FLAP Programmer's Manual", A.H. Morris Jr., TR-2558 (1971) US Naval Weapons Lab].
[Sammet 1969, p. 506].
|2.||(storage, jargon)||flap - To unload a DECtape (so it goes flap,
flap, flap). Old-time hackers at MIT tell of the days
when the disk was device 0 and microtapes were 1, 2,
etc. and attempting to flap device 0 would instead start a
motor banging inside a cabinet near the disk.|
The term is used, by extension, for unloading any magnetic tape. See also macrotape. Modern cartridge tapes no longer actually flap, but the usage has remained.
The term could well be re-applied to DEC's TK50 cartridge tape drive, a spectacularly misengineered contraption which makes a loud flapping sound, almost like an old reel-type lawnmower, in one of its many tape-eating failure modes.
|3.||(networking)||flap - See flapping router.|