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Longman Dictionary of Contemporary English
flap
I.noun
COLLOCATIONS FROM OTHER ENTRIES
a bird flaps its wings (=it moves its wings up and down)
▪ The baby birds were trying to flap their wings.
a cat flap (=a special door for a cat to go in and out of a house)
▪ The cat was getting too fat to fit through the cat flap.
be blowing/swaying/flapping etc in the wind
▪ The trees were all swaying in the wind.
cat flap
flap its wings (=move them)
▪ The ducks woke up and flapped their wings.
wings flap
▪ Dusky wings flapped overhead.
COLLOCATIONS FROM CORPUS
■ NOUN
cat
▪ I hear the thump of the cat flap as Cat O'Fun tumbles through it without the feline grace of his fellows.
▪ Became confident and prised the cat flap open again.
▪ One craftily claws her stocking by the Big Cat flap.
▪ It's only a matter of time till he learns to use the cat flap.
▪ Somebody had left me a note, though, through the cat flap in my flat door.
wing
▪ The evidence indicated that wing flaps were in the retracted position at the time of impact.
EXAMPLES FROM OTHER ENTRIES
▪ All we could hear was the flap of the sails.
▪ Kelly resigned over a flap about videotaping interviews with job seekers.
▪ The return address was on the flap of the envelope.
EXAMPLES FROM CORPUS
▪ Cars and lorries hooting, accelerating and braking put Dawn into a real flap.
▪ He prefers to suffer quietly through the periodic flaps.
▪ Remembering the cup in her pocket, she pressed her hand over the flap to hide it.
▪ The flap over the name is only the latest that has made Marana the butt of local jokes.
▪ The headgear was so tight around the forehead that my brain began to ache, but the ear flaps dangled.
▪ They had thick flat soles, to each side of which was stretched a straight flap of leather.
▪ Two hours later, when the flaps of the box folded down, the antenna unfurled.
▪ With undercarriage down and full flap these symptoms are further exaggerated, and the speed comes back to below eighty.
II.verb
COLLOCATIONS FROM CORPUS
■ ADVERB
around
▪ The thing flapped around like a sail in a transatlantic yacht race, you could have gone surfing on it.
▪ I went flapping around like Charlie Chaplin to my first night of work.
▪ Birds came and flapped around the body.
▪ Yellow, withered bean leaves rustled on the plants and flapped around on the ground.
▪ I like this - in high winds there's no chance of the flysheet flapping around or flying over the tent.
▪ The bat flapped around his misshapen hat and took off into the dark.
▪ A butterfly was flapping around the wheelbarrow looking for a fragrance to match the colour of that great metallic flower.
■ NOUN
breeze
▪ She made her silent vow to the piece of wallpaper that flapped in the breeze.
▪ The fenders flapped in the breeze, and the engine coughed and wheezed like an old man on his last legs.
▪ His shirt-tails flapping in the breeze, he faced the green at an angle of forty-five degrees and sliced every shot.
▪ Huckleberry's tongue was protruding out of the corner of his mouth and flapping in the breeze!
wind
▪ A sailing ship was passing, its mylar sails flapping in the gusty wind.
▪ The quarterback wears a green plaid shirt that flaps in the late-afternoon wind.
▪ The Headmaster still had on his gown and he flapped in the wind like a bat as he charged across the grass.
▪ Duvall followed closely behind, coat flapping in the wind and the rain.
▪ One morning a loose cord was flapping in the wind, cracking the canvas alongside his ear.
▪ And the Linwood plant a graveyard, grass growing between the assembly lines, corrugated-iron roofs flapping in the wind.
PHRASES FROM OTHER ENTRIES
sb's ears are flapping
EXAMPLES FROM OTHER ENTRIES
▪ The ship's sails flapped in the wind.
EXAMPLES FROM CORPUS
▪ A pair of night birds circled above, the flapping of their wings and their eerie screeches penetrating the thickening mist.
▪ Gloria lead Dot up the outside steps from the basement to look at the cotton flags flapping in the sun.
▪ Her wings flapped, and the duck took immediate flight.
▪ His shirt-tails flapping in the breeze, he faced the green at an angle of forty-five degrees and sliced every shot.
▪ Intangible winds gripped the wizard's robe, flapping it out in eddies of blue and green sparks.
▪ She watched the next scene; nurses running towards a hospital, their unbuttoned navy-blue coats flapping over pale uniforms.
▪ With his arm on the window well, he cruised down the street, the breeze flapping his sleeve.
The Collaborative International Dictionary
Flap

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 \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.

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.

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 \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.

Douglas Harper's Etymology Dictionary
flap

mid-14c., flappe "a blow, slap, buffet," probably imitative of the sound of striking. Sense of "device for slapping or striking" is from early 15c. Meaning "something that hangs down" is first recorded 1520s, probably from flap (v.). Sense of "motion or noise like a bird's wing" is 1774; meaning "disturbance, noisy tumult" is 1916, British slang.

flap

early 14c., "dash about, shake, beat (the wings);" later "strike, hit" (mid-14c.); probably ultimately imitative. Meaning "to swing about loosely" is from 1520s. Related: Flapped; flapping.

Wiktionary
flap

n. 1 Anything broad and flexible 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 A side fin of a ray - also termed a wing. 4 An upset, stir, scandal or controversy 5 The motion of anything broad and loose, or a stroke or sound made with it. vb. (context transitive English) To move (something broad and loose) back and forth.

WordNet
flap
  1. n. 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]

  6. [also: flapping, flapped]

flap
  1. v. 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

  7. [also: flapping, flapped]

Wikipedia
Flap

Flap may refer to:

Flap (aeronautics)

Flaps are a type of high-lift device used to increase the lift of an aircraft wing at a given airspeed. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to lower the minimum speed at which the aircraft can be safely flown, and to increase the angle of descent for landing. Flaps also cause an increase in drag, so they are retracted when not needed.

Extending the wing flaps increases the camber or curvature of the wing, raising the maximum lift coefficient or the upper limit to the lift a wing can generate. This allows the aircraft to generate the required lift at a lower speed, reducing the stalling speed of the aircraft, and therefore also the minimum speed at which the aircraft will safely maintain flight. The increase in camber also increases the wing drag, which can be beneficial during approach and landing, because it slows the aircraft. In some aircraft configurations, a useful side effect of flap deployment is a decrease in aircraft pitch angle, which lowers the nose thereby improving the pilot's view of the runway over the nose of the aircraft during landing. In other configurations, however, depending on the type of flap and the location of the wing, flaps can cause the nose to rise ( pitch-up), obscuring the pilot's view of the runway.

There are many different designs of flaps used, with the specific choice depending on the size, speed and complexity of the aircraft on which they are to be used, as well as the era in which the aircraft was designed. Plain flaps, slotted flaps, and Fowler flaps are the most common. Krueger flaps are positioned on the leading edge of the wings and are used on many jet airliners.

The Fowler, Fairey-Youngman and Gouge types of flap increase the wing area in addition to changing the camber. The larger lifting surface reduces wing loading, hence further reducing the stalling speed.

Some flaps are fitted elsewhere. Leading-edge flaps form the wing leading edge and when deployed they rotate down to increase the wing camber. The de Havilland DH.88 Comet racer had flaps running across beneath the fuselage and forward of the wing trailing edge. Many of the Waco Custom Cabin series biplanes have the flaps at mid-chord on the underside of the top wing.

Flap (film)

Flap (distributed in Britain as The Last Warrior) is a 1970 American comedy western film directed by Carol Reed and starring Anthony Quinn, Claude Akins and Shelley Winters. Set in a modern Native American reservation, it is based on the novel Nobody Loves a Drunken Indian by Clair Huffaker.

Flap (surgery)

Flap surgery is a technique in plastic and reconstructive surgery where any type of tissue is lifted from a donor site and moved to a recipient site with an intact blood supply. This is similar to but different from a graft, which does not have an intact blood supply and therefore relies on growth of new blood vessels. This is done to fill a defect such as a wound resulting from injury or surgery when the remaining tissue is unable to support a graft, or to rebuild more complex anatomic structures such as breast or jaw.

Usage examples of "flap".

The Pasha salaamed without a word, his Abyssinian slaves helped him on his great white donkey, and he trotted away towards the palace, the trousers flapping about his huge legs.

Leaning on the crumbling stone wall of a temple orchard, looking past the sloping tile roofs of Grange Head, Maia lifted her gaze to watch low clouds briefly occult a brightly speckled, placid sea, its green shoals aflicker with silver schools of fish and the flapping shadows of hovering swoop-birds.

Gaines belted it on, and accepted a helmet, into which he crammed his head, leaving the antinoise ear flaps up.

When I landed with my trade-goods, leaving my steering sweep apeak, Otoo left his stroke position and came into the stern-sheets, where a Winchester lay ready to hand under a flap of canvas.

The combatants retired into their respective corners and their seconds cooled them by flapping their wings, while Archimedes gave Merlyn a little massage by nibbling with his beak.

Now with the arthroscope we can see inside the knee and find the offending flap, cut it off and pull it out through tiny holes that will leave the knee virtually untouched.

The astrophysicist turned the envelope over once in his hands, grunted noncommittally, unsealed the flap, and unfolded the letter within.

Hresh would say, you might also be able to learn how to fly by flapping your arms, if you worked at it long enough.

Phil raced along the backstretch of corridor and up the second flight, Sacheverell flapping at his heels like a green bat.

If the latter had also been befrilled that appendage might have gone into a rising flap.

That mollified Belli somewhat but reproof, dramatised by his flapping candle flames, rested in the fine eyes.

Brennan brushed past a couple of bemedalled attaches, jacket flapping, unshaven, certain that only moments separated him from security intervention.

She threw back the flap and found Betta lying on her back just beyond the doorway.

Because if you flap your gums again without permission, your bloodsucking days will be over.

He retrieved his pants from a storage nook that opened with a flap of skin like the blowhole on a killer whale.