/ Dictionary / Index F flak: Meaning and Definition of Find definitions for: flak Pronunciation: (flak), [key] — n. antiaircraft fire, esp. as experienced by the crews of combat airplanes at which the fire is directed. criticism; hostile reaction; abuse: Such an unpopular decision is bound to draw a lot of flak from the press. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: flak (Thesaurus) flair flake Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language