/ Dictionary / Index M mushhead: Meaning and Definition of Find definitions for: mush•head Pronunciation: (mush'hed", moosh'-), [key] — n. Slang. a stupid person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. musher Mushin Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language