/ Dictionary / Index M mullock: Meaning and Definition of Find definitions for: mul•lock Pronunciation: (mul'uk), [key] — n. (in Australasia) refuse or rubbish, as rock or earth, from a mine; muck. to ridicule. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mullite mulloway Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language