/ Dictionary / Index M musth: Meaning and Definition of Find definitions for: musth Pronunciation: (must), [key] — n. a state or condition of violent, destructive frenzy occurring with the rutting season in male elephants, accompanied by the exudation of an oily substance from glands between the eyes and mouth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: musth (Thesaurus) Muster Day mustn't 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