an artifact that covers something else (usually to protect or shelter or conceal it)

an opaque adjustable flap on a lamp fixture; used in photography to cut off light from particular areas

the loose back flap of a coat that hangs below the waist

(15th-16th century) a flap for the crotch of men's tight-fitting breeches

one of two flaps attached to a cap to keep the ears warm

a flap along the edge of a garment; used in medieval clothing