/ Dictionary / Index F flak suit: Meaning and Definition of Find definitions for: flak' suit" Pronunciation: [key] — U.S. Air Force. U.S. Air Force. a suit of two or more padded armored garments designed to protect the body from shrapnel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flak jacket flaky Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language