/ Dictionary / Index M muck bar: Meaning and Definition of Find definitions for: muck' bar" Pronunciation: [key] a rough bar of wrought iron, rolled from blooms of iron extracted from a puddling furnace. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. muck-a-muck mucker Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language