flap
[flap]
verb, flapped, flap⋅ping, noun | 1. | to swing or sway back and forth loosely, esp. with noise: A loose shutter flapped outside the window. |
| 2. | to move up and down, as wings; flap the wings, or make similar movements. |
| 3. | to strike a blow with something broad and flexible. |
| 4. | Slang. to become excited or confused, esp. under stress: a seasoned diplomat who doesn't flap easily. |
| 5. | to move (wings, arms, etc.) up and down. |
| 6. | to cause to swing or sway loosely, esp. with noise. |
| 7. | to strike with something broad and flat. |
| 8. | to toss, fold, shut, etc., smartly, roughly, or noisily. |
| 9. | Phonetics. to pronounce (a sound) with articulation resembling that of a flap: The British often flap their r's. |
| 10. | something flat and broad that is attached at one side only and hangs loosely or covers an opening: the flap of an envelope; the flap of a pocket. |
| 11. | either of the two segments of a book jacket folding under the book's front and back covers. |
| 12. | one leaf of a folding door, shutter, or the like. |
| 13. | a flapping motion. |
| 14. | the noise produced by something that flaps. |
| 15. | a blow given with something broad and flat. |
| 16. | Slang.
|
| 17. | Surgery. a portion of skin or flesh that is partially separated from the body and may subsequently be transposed by grafting. |
| 18. | Aeronautics. a movable surface used for increasing the lift or drag of an airplane. |
| 19. | Phonetics.
|
| 20. | Building Trades.
|
1275–1325; ME flappe a blow, slap, flappen to hit, slap; cf. D flap, flappen

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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Flap
Flap\, n. [OE. flappe, flap, blow, bly-flap; cf. D. flap, and E. flap, v.] Anything broad and limber that hangs loose, or that is attached by one side or end and is easily moved; as, the flap of a garment. A cartilaginous flap upon the opening of the larynx. --Sir T. Browne. 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; as, the flap of a sail or of a wing. 4. pl. (Far.) A disease in the lips of horses. Flap tile, a tile with a bent up portion, to turn a corner or catch a drip. Flap valve (Mech.), a valve which opens and shuts upon one hinged side; a clack valve.Flap
Flap\, v. t. [imp. & p. p. Flapped; p. pr. & vb. n. Flapping.] [Prob. of imitative origin; cf. D. flappen, E. flap, n., flop, flippant, fillip.]1. To beat with a flap; to strike. Yet let me flap this bug with gilded wings. --Pope. 2. To move, as something broad and flaplike; as, to flap the wings; to let fall, as the brim of a hat. To flap in the mouth, to taunt. [Obs.] --W. Cartwright.Flap
Flap\, v. i. 1. To move as do wings, or as something broad or loose; to fly with wings beating the air. The crows flapped over by twos and threes. --Lowell. 2. To fall and hang like a flap, as the brim of a hat, or other broad thing. --Gay.Cite This Source
flap
vt.1. [obs.] 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 DEC microtapes were 1, 2,... and attempting to flap device 0 would instead start a motor banging inside a cabinet near the disk.
2. By extension, to unload 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.)
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flap (n.)
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Main Entry: flap
Pronunciation: 'flap
Function: noun
: a piece of tissue partly severed from its place of origin for use in surgical grafting
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flap (flāp)
n.
Tissue used in surgical grafting that is only partially detached from its donor site so that it continues to be nourished during transfer to the recipient site.
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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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].
[The Jargon File]
(1994-10-17)
flap
1.
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.
2.
[The Jargon File]
(1997-06-17)
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