flap

The motion made by flapping up and down.

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

An excited state of agitation.

“there was a terrible flap about the theft”

A movable piece of tissue partly connected to the body.

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

“he wrote on the flap of the envelope”

Move noisily.

“flags flapped in the strong wind”

Pronounce with a flap, of alveolar sounds.

Move with a flapping motion.

“The bird's wings were flapping”

Make a fuss; be agitated.

Move in a wavy pattern or with a rising and falling motion.

Move with a thrashing motion.

“The bird flapped its wings”