v. Third-person singular simple present indicative form of flap.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a movable airfoil that is part of an aircraft wing; used to increase lift or drag
Word Usage
"Brown is only about five feet high, and he wears an overcoat ten times too big for him, and it flaps -- yes, it _flaps_ about his odious little heels."