/ Dictionary / Index F flaperon: Meaning and Definition of Find definitions for: flap•er•on Pronunciation: (flap'u-ron"), [key] — n. Aeron. a control surface functioning both as a flap and as an aileron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flapdragon flapjack Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language