FLAP, n. [L. alapa, a slap. It seems difficult to separate flap from clap, slap, flabby, lap, &c.] 1. Any thing broad and limber that hangs loose, or is easily moved.A cartilaginous flap on the opening of the larynx.We say, the flap of a garment, the flap of the ear, the flap of a hat.2. The motion of any thing broad and loose, or a stroke with it.3. The flaps, a disease in the lips of horses.FLAP, v.t. 1. To beat with a flap.Yet let me flap this bug with gilded wings.2. To move something broad; as, to flap the wings.3. To let fall, as the brim of a hat. [This sense seems to indicate a connection with lap.]FLAP, v.i. 1. To move as wings, or as something broad or loose.2. To fall, as the brim of a hat, or other broad thing.
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