Tra từ flap - Từ điển Oxford Advanced Learner 8th

flap [flap flaps flapped flapping] noun, verb BrE [flæp] NAmE [flæp]
noun

FLAT PIECE OF PAPER, ETC.
1. countable a flat piece of paper, cloth, metal, etc. that is attached to sth along one side and that hangs down or covers an opening
•the flap of an envelope
•I zipped the tent flaps shut.
•The jacket was fastened with a complicated buttoned flap.
•He was wearing a deerstalker hat with flaps to cover the ears.
see also ↑cat flap

MOVEMENT
2. countable, usually singular a quick often noisy movement of sth up and down or from side to side
•With a flap of its wings, the bird was gone.
•the flap of the sails

WORRY/EXCITEMENT
3. singular (informal, especially BrE)a state of worry, confusion and excitement
•She gets in a flap over the slightest thing.
•Harry's in a bit of a flap over this interview tomorrow.

PUBLIC DISAGREEMENT
4. singular (NAmE)public disagreement, anger or criticism caused by sth a public figure has said or done
•the flap about the President's business affairs

PART OF AIRCRAFT
5. countable (technical)a part of the wing of an aircraft, on the rear of the wing, that can be moved up or down to control upward or downward movement
•The wing flaps were not extended at the time of the accident.

PHONETICS
6. countable = ↑tap (⁶)

Word Origin:
Middle English: probably imitative.

Example Bank:
•Having to cook for everyone at Christmas put his mother in a real flap.
•He drew back the tent flap.
•I've never seen her in a flap; she's always so calm.
•The officer undid the flap of his holster and drew his gun.
•The pilot lowered the flaps as the aircraft came into land.
•a flap over nuclear issues
•a loose flap of skin
•a stylish jacket with leather cuffs and pocket flaps
•It is all part of the continuing flap about the President's business affairs.
•With a flap of its wings the bird was gone.

verb (-pp-)

MOVE QUICKLY
1. transitive, intransitive ~ (sth) if a bird flaps its wings, or if its wings flap, they move quickly up and down
Syn: ↑beat
•The bird flapped its wings and flew away.
•The gulls flew off, wings flapping.
2. intransitive, transitive to move or to make sth move up and down or from side to side, often making a noise
•(+ adv./prep.) The sails flapped in the breeze.
•Two large birds flapped (= flew) slowly across the water.
•~ sth She walked up and down, flapping her arms to keep warm.
•A gust of wind flapped the tents.

BE WORRIED/EXCITED
3. intransitive (BrE, informal)to behave in an anxious or excited way
•There's no need to flap— I've got everything under control.

PHONETICS
4. transitive ~ sth = ↑tap (⁷)
see sb's ears are flapping at ↑ear
Verb forms:

Word Origin:
Middle English: probably imitative.

Example Bank:
•The sails flapped wildly in the stiff breeze.
•Her wet skirt flapped around her knees.
•His coat flapped open.
•The man was flapping a large white sheet.