/ Dictionary / Index H horse mackerel: Meaning and Definition of Find definitions for: horse' mack"erel Pronunciation: [key] See See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. horseless carriage horseman Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language