/ Dictionary / Index M Musca: Meaning and Definition of Find definitions for: Mus•ca Pronunciation: (mus'ku), [key] — gen. Mus•cae the Fly, a small southern constellation between Crux and Chamaeleon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: musca (Thesaurus) Mus.B. muscadel Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language