Noun Definition
flap
1.Definition: a movable airfoil that is part of an aircraft wing; used to increase lift or drag
Related Noun(s):flaps
Category: Objects3.Definition: an excited state of agitation
"He was in a dither", "There was a terrible flap about the theft"
Category: General4.Definition: any broad thin and limber covering attached at one edge; hangs loose or projects freely
"He wrote on the flap of the envelope"
Category: Objects