/ Dictionary / Index A airfoil: Meaning and Definition of Find definitions for: air•foil Pronunciation: (âr'foil"), [key] — n. Aeron. any surface, as a wing, aileron, or stabilizer, designed to aid in lifting or controlling an aircraft by making use of the air currents through which it moves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: airfoil (Thesaurus) airflow Air Force Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language