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