/ Dictionary / Index M muni: Meaning and Definition of Find definitions for: mu•ni Pronunciation: (my'nē), [key] — Informal. Informal. —adj. municipal; operated by a municipal government: a muni bus company. —n. a municipal bond. Mu•ni Pronunciation: (my'nē), [key] — n. (Muni Weisenfreund), 1895–1967, U.S. actor, born in Austria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Munhall muni bond fund Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language