AskDefine | Define flap

Dictionary Definition



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]


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]

User Contributed Dictionary



  • /flæp/
  • Rhymes with: -æp


  1. 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.
  2. A hinged leaf, as of a table or shutter.
  3. a stir, scandal or controversy
    The comment caused quite a flap in the newspapers.
  4. The motion of anything broad and loose, or a stroke or sound made with it; as, the flap of a sail or the flap of a wing
  5. A disease in the lips of horses.
  6. A hinged surface on the trailing edge of the wings of an aeroplane.


See also


  1. to move something broad and loose back and forth, as flap its wings
  2. to move loosely back and forth
    The flag flapped in the breeze.

See also

Extensive Definition

Flap may refer to:
  • Flap (aircraft), a hinged surface on the trailing edge of an airplane wing
  • 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
    • Cat flap, 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 or flap gate, a pressure driven water flow control device between a channel and other water body
  • Flap consonant, a sound produced by brief contact between the tongue and the roof of the mouth
  • Free flap, a surgical transfer of vascularised tissue
  • Flap (Little Nemo), a minor character from Little Nemo: Adventures in Slumberland
  • Route flapping, 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 (FLAP)

See also

  • Flapper, a woman who wore a certain style of clothes in the 1920s
  • Flapping races, unlicensed horse rains in the UK and Ireland
flap in German: Klappe
flap in Esperanto: Klapo

Synonyms, Antonyms and Related Words

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
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