/ Dictionary / Index M misrun: Meaning and Definition of Find definitions for: mis•run Pronunciation: (mis-run', mis'run), [key] — n. Metall. an incomplete casting, the metal of which has solidified prematurely. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. misrule miss Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language