flap

any broad thin and limber covering attached at one edge; hangs loose or projects freely

he wrote on the flap of the envelope

a movable airfoil that is part of an aircraft wing; used to increase lift or drag

a movable piece of tissue partly connected to the body

the motion made by flapping up and down

an excited state of agitation

he was in a dither

there was a terrible flap about the theft

pronounce with a flap, of alveolar sounds

make a fuss; be agitated

move noisily

flags flapped in the strong wind

move in a wavy pattern or with a rising and falling motion

The curtains undulated

the waves rolled towards the beach

move with a flapping motion

The bird's wings were flapping

move with a thrashing motion

The bird flapped its wings

The eagle beat its wings and soared high into the sky