/ Dictionary / Index M muckle: Meaning and Definition of Find definitions for: muck•le Pronunciation: (muk'ul), [key] — adj. Brit. Dial. mickle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: muckle (Thesaurus) muckland muckluck Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language