/ Dictionary / Index M mad-dog: Meaning and Definition of Find definitions for: mad'-dog' Pronunciation: [key] — -dogged, -dog•ging. to glare at threateningly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. maddish mad-dog skullcap Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language