/ Dictionary / Index B busher: Meaning and Definition of Find definitions for: bush•er Pronunciation: (boosh'ur), [key] — n. Baseball Slang. See(def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: busher (Thesaurus) bushelman bushfire Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language