Meaning Of 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.
v.

A hinged leaf, as of a table or shutter.
v.

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.
v.

A disease in the lips of horses.
n.

To beat with a flap; to strike.
n.

To move, as something broad and flaplike; as, to flap the wings; to let fall, as the brim of a hat.
v. i.

To move as do wings, or as something broad or loose; to fly with wings beating the air.
v. i.

To fall and hang like a flap, as the brim of a hat, or other broad thing.