5 letters · 10 points in Scrabble
noun a movable airfoil that is part of an aircraft wing; used to increase lift or drag
noun any broad thin and limber covering attached at one edge; hangs loose or projects freely
noun an excited state of agitation
originEtymology tree English flap Middle English -es English -s English flaps From flap + -s.
Etymology from Wiktionary, CC BY-SA 3.0