/ Dictionary / Index M mackerel: Meaning and Definition of Find definitions for: mack•er•el Pronunciation: (mak'ur-ul, mak'rul), [key] — pl. -el, -els. a food fish, Scomber scombrus, of the North Atlantic, having wavy cross markings on the back. See any of various similar fishes, as the Atka mackerel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mackerel (Thesaurus) Mackenzie Mountains mackerel gull Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language