[1] : The Collaborative International Dictionary of English v.0.48

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.
      1913 webster

            yet let me flap this bug with gilded wings. --pope.
      1913 webster

   2. to move, as something broad and flaplike; as, to flap the
      wings; to let fall, as the brim of a hat.
      1913 webster

   to flap in the mouth, to taunt. obs. --w. cartwright.
      1913 webster
see also:
flapped flapping to flap in the mouth 

[2] : The Collaborative International Dictionary of English v.0.48

flap \flap\, v. i.
   1. to move as do wings, or as something broad or loose; to
      fly with wings beating the air.
      1913 webster

            the crows flapped over by twos and threes. --lowell.
      1913 webster

   2. to fall and hang like a flap, as the brim of a hat, or
      other broad thing. --gay.
      1913 webster

[3] : The Collaborative International Dictionary of English v.0.48

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.
   1913 webster

         a cartilaginous flap upon the opening of the larynx.
                                                  --sir t.
                                                  browne.
   1913 webster

   2. a hinged leaf, as of a table or shutter.
      1913 webster

   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.
      1913 webster

   4. pl. far. a disease in the lips of horses.
      1913 webster

   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.
      wordnet 1.5

   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.
      1913 webster
see also:
flap tile flap valve 

[4] : WordNet (r) 2.0

flap
     n 1: any broad thin and limber covering attached at one edge;
          hangs loose or projects freely; "he wrote on the flap of
          the envelope"
     2: an excited state of agitation; "he was in a dither"; "there
        was a terrible flap about the theft" syn: dither, pother,
         fuss, tizzy
     3: the motion made by flapping up and down syn: flapping, flutter,
         fluttering
     4: a movable piece of tissue partly connected to the body
     5: a movable airfoil that is part of an aircraft wing; used to
        increase lift or drag syn: flaps
     v 1: move in a wavy pattern or with a rising and falling motion;
          "the curtains undulated"; "the waves rolled towards the
          beach" syn: roll, undulate, wave
     2: move noisily; "flags flapped in the strong wind"
     3: move with a thrashing motion; "the bird flapped its wings";
        "the eagle beat its wings and soared high into the sky"
        syn: beat
     4: move with a flapping motion; "the bird's wings were
        flapping" syn: beat
     5: make a fuss; be agitated syn: dither, pother
     6: pronounce with a flap, of alveolar sounds
     also: flapping, flapped
see also:
dither pother fuss tizzy flapping flutter 
fluttering flaps roll undulate wave 
beat flapped 

[5] : Moby Thesaurus II by Grady Ward, 1.0

373 moby thesaurus words for "flap":
   bedlam let loose, ado, agitation, applique, argument, bag, bang,
   baste, batter, beat, beating, bedlam, bicker, bilge, blain, blast,
   bleb, blister, blob, bluster, bobbery, boil, boiling, boss, bother,
   botheration, bow, box, brandish, brawl, broil, brouhaha, bubble,
   buffet, bulb, bulge, bulla, bump, bunch, burl, burst, bust, bustle,
   button, cacophony, cahot, cascade, chaos, charivari, chine, chirm,
   churn, clamor, clangor, clap, clash, clatter, clump, coat, coating,
   collop, commotion, condyle, confusion, conturbation, convex,
   covering, crack, crash, crump, cuff, cut, daggle, dance, dangle,
   deal, depend, din, discomposure, discord, disk, disorder, dispute,
   disquiet, disquietude, distress, disturbance, dither, donnybrook,
   dowel, drabble, drag, draggle, drape, droop, drub, drunken brawl,
   dustup, ear, ebullition, embroilment, excitement, fall, fanaticism,
   feery-fary, ferment, fermentation, feuille, fever, feverishness,
   fidgetiness, fidgets, film, fit, flail, flange, flapping, flaunt,
   flick, flicker, flip, flit, flitter, float, flop, flourish, flow,
   flurry, fluster, flusteration, flustration, flutter, flutteration,
   flutteriness, fly, foil, fold, foment, fomentation, foofaraw,
   fracas, free-for-all, frenzy, fret, fume, furor, furore, fury,
   fuss, fussiness, gall, gnarl, go pitapat, gutter, hammer, handle,
   hang, hang down, hell broke loose, hill, howl, hubbub, hue and cry,
   hullabaloo, hump, hunch, hurly-burly, imbrication, inquietude,
   jangle, jitters, jog, joggle, jumpiness, knob, knock, knot, knur,
   knurl, lambaste, lamella, lamina, laminated glass, laminated wood,
   lap, lappet, larrup, lash, lather, leaf, lip, loop, lop,
   loud noise, lump, maelstrom, malaise, maul, membrane, moil, mole,
   mountain, nerviness, nervosity, nervousness, nevus, nod, noise,
   noise and shouting, nub, nubbin, nubble, oscillate, oscillation,
   outcry, overlap, overlapping, overlay, overlayer, palpitate,
   palpitation, pandemonium, pane, panel, panic, papilloma, passion,
   paste, patina, patter, peel, peg, pellicle, pelt, pend,
   perturbation, pitapat, pitter-patter, plait, plank, plate, plating,
   ply, plywood, pommel, pother, pound, pucker, pulse, pulverize,
   pummel, quarrel, quiver, racket, rage, rap, rasher, rattle, report,
   restlessness, rhubarb, rib, ridge, ring, roar, roil, rout, row,
   ruckus, ruction, rumble, rumpus, safety glass, sag, scramble, scum,
   seethe, seething, shake, sheet, shindy, shivaree, shoulder, skin,
   slab, slam, slap, slat, sledgehammer, slice, smack, spank, spasm,
   spine, splat, splutter, spurt, sputter, state, stew, stir,
   storminess, stripe, stud, style, swag, swap, sweat, swing, swirl,
   swivet, tab, table, tablet, tail, tap, tempestuousness, thrash,
   thresh, throb, thump, thunder, thunderclap, thwack, tintamarre,
   tizzy, to-do, trail, trepidation, trepidity, tubercle, tubercule,
   tumult, tumultuation, tumultuousness, turbidity, turbulence,
   turmoil, twitter, twitteration, undulate, unease, unquiet, unrest,
   uproar, upset, veneer, verruca, vesicle, vibrate, vortex, wafer,
   wag, waggle, wale, wallop, wart, wave, waver, weep, welt, whack,
   wham, whap, whip, whirl, whomp, whop, wield, wigwag, wildness,
   zeal, zealousness

[6] : Jargon File (4.3.1, 29 Jun 2001)

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.


see also:
macrotape 

[7] : The Free On-line Dictionary of Computing (27 SEP 03)

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.
     
        jargon file
     
        1994-10-17
     
     
see also:
symbolic mathematics ibm 360 jargon file 

[8] : The Free On-line Dictionary of Computing (27 SEP 03)

flap
     
        1.  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.
     
        2.  see flapping router.
     
        jargon file
     
        1997-06-17
     
     
see also:
dectape hackers mit microtapes macrotape cartridge tapes 
dec tk50 flapping router jargon file 

Flap >> F Words
Flap, definition of term: Flap
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