Breadcrumb Home > Dictionary > Index M musing: Meaning and Definition of Find definitions for: mus•ing Pronunciation: (my'zing), [key] — adj. absorbed in thought; meditative. —n. contemplation; reflection. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: musing (Thesaurus) Musil musique concrète* ✖ Related Content Daily Word Quiz: musth Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language