Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A flat, usually thin piece attached at only one side.
  • n. A projecting or hanging piece usually intended to double over and protect or cover: the flap of an envelope.
  • n. The act of waving or fluttering: the flap of the flag in the wind.
  • n. The sound produced by this motion.
  • n. A blow given with something flat; a slap.
  • n. A variable control surface on the trailing edge of an aircraft wing, used primarily to increase lift or drag.
  • n. Either of the folded ends of a book jacket that fit inside the front and back covers.
  • n. Medicine Tissue that has been partially detached and used in surgical grafting to fill an adjacent defect or cover the cut end of a bone after amputation.
  • n. Linguistics A sound articulated by a single, quick touch of the tongue against the teeth or alveolar ridge, as (t) in water. Also called tap1.
  • n. Informal A commotion or disturbance: a flap in Congress over the defense budget.
  • transitive v. To wave (the arms, for example) up and down.
  • transitive v. To cause to move or sway with a fluttering or waving motion.
  • transitive v. To hit with something broad and flat; slap.
  • transitive v. Informal To fling down; toss.
  • intransitive v. To move or sway while fixed at one edge or corner; flutter: banners flapping in the breeze.
  • intransitive v. To wave arms or wings up and down.
  • intransitive v. To fly by beating the air with the wings.
  • intransitive v. Informal To become upset or flustered.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Anything broad and flexible that hangs loose, or that is attached by one side or end and is easily moved.
  • n. A hinged leaf, as of a table or shutter.
  • n. An upset, stir, scandal or controversy
  • n. The motion of anything broad and loose, or a stroke or sound made with it.
  • n. A disease in the lips of horses.
  • n. A hinged surface on the trailing edge of the wings of an aeroplane.
  • n. A piece of tissue incompletely detached from the body, as an intermediate stage of plastic surgery.
  • n. Vagina.
  • v. To move (something broad and loose) back and forth.

from the GNU version of the Collaborative International Dictionary of English

  • n. Anything broad and limber that hangs loose, or that is attached by one side or end and is easily moved.
  • n. A hinged leaf, as of a table or shutter.
  • n. The motion of anything broad and loose, or a stroke or sound made with it.
  • n. A disease in the lips of horses.
  • n. a movable part of an airplane wing, used to increase lift or drag, especially when taking off or landing. used often in the plural.
  • intransitive v. To move as do wings, or as something broad or loose; to fly with wings beating the air.
  • intransitive v. To fall and hang like a flap, as the brim of a hat, or other broad thing.
  • transitive v. To beat with a flap; to strike.
  • transitive v. To move, as something broad and flaplike; ; to let fall, as the brim of a hat.

from The Century Dictionary and Cyclopedia

  • To strike a blow with anything broad and flexible, as the hand; clap; make a noise like clapping.
  • To move in a waving or swaying manner, as wings, or as something broad or loose.
  • To burst out suddenly, as flames; flash.
  • To fall like a flap, as the brim of a hat or other broad thing.
  • To strike; beat; slap; give a stroke of any kind to.
  • To beat with or as if with a flap.
  • To make or cause a swaying movement of, as something broad or flap-like: as, the wind flapped the shutters.
  • To provide with a flap.
  • To let fall the flap of; move the flap of; especially, as in the case of a hat, to bring the flaps of forward and downward, so as to cover or protect the face.
  • To arouse the attention of, as by flapping the ears: apparently in allusion to the “flappers” employed for such a purpose in the feigned island of Laputa in “Gulliver's Travels.” See extract from Swift, under flapper, 1.
  • n. A stroke, blow, or buffet, as with the hand or with any weapon, etc.
  • n. The motion of anything broad and loose; a flapping motion.
  • n. An instrument for keeping off flies by a flapping motion.
  • n. Anything broad and flexible that hangs loose, or is attached by one end or side, and easily moved; that part of anything which projects in such a form.
  • n. A heavy valve used to prevent the entrance of the tide into a sewer.
  • n. In surgery, a portion of skin or flesh separated from the underlying part, but remaining attached at the base.
  • n. plural A disease in the lips of horses, in which they become blistered and swell on both sides.
  • n. plural A discomycetous fungus, Peziza cochleata.
  • n. plural A broadly expanded hymenomycetous fungus, probably Agaricus arvensis.
  • n. In mycology, same as flab.
  • n. In phonetics, a flapping motion of the tongue or uvula or the sound produced by it, as in vocalizing the letters l or r.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the motion made by flapping up and down
  • n. any broad thin and limber covering attached at one edge; hangs loose or projects freely
  • n. a movable airfoil that is part of an aircraft wing; used to increase lift or drag
  • n. an excited state of agitation
  • v. make a fuss; be agitated
  • v. move with a thrashing motion
  • n. a movable piece of tissue partly connected to the body
  • v. move in a wavy pattern or with a rising and falling motion
  • v. move noisily
  • v. pronounce with a flap, of alveolar sounds
  • v. move with a flapping motion

Etymologies

Middle English flappe, slap.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Middle English flappe ("slap") (Wiktionary)

Examples

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