Flap

Part of speech: noun (n.)

1. 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. A cartilaginous flap upon the opening of the larynx. Sir T. Browne.

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

3. 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.

4. A disease in the lips of horses. Flap tile, a tile with a bent up portion, to turn a corner or catch a drip. -- Flap valve (Mech.), a valve which opens and shuts upon one hinged side; a clack valve.

Part of speech: verb (v.)

1. To beat with a flap; to strike. Yet let me flap this bug with gilded wings. Pope.

2. To move, as something broad and flaplike; as, to flap the wings; to let fall, as the brim of a hat. To flap in the mouth, to taunt. [Obs.] W. Cartwright.

Part of speech: verb (v.)

1. To move as do wings, or as something broad or loose; to fly with wings beating the air. The crows flapped over by twos and threes. Lowell.

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