/ Dictionary / Index B bottlebrush: Meaning and Definition of Find definitions for: bot•tle•brush Pronunciation: (bot'l-brush"), [key] — n. Bot. any of various trees or shrubs of the myrtle family, esp. of the genera Callistemon and Melaleuca, native to Australia and adjacent areas, having spikes of flowers with numerous conspicuous stamens. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bottlebrush (Thesaurus) bottle bill bottlebrush grass Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language