/ Dictionary / Index B bristletail: Meaning and Definition of Find definitions for: bris•tle•tail Pronunciation: (bris'ul-tāl"), [key] — n. any of various wingless insects of the order Thysanura, having long, bristlelike, caudal appendages, comprising the firebrats, silverfish, and machilids. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bristletail (Thesaurus) bristlemouth bristle-thighed curlew 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