/ Dictionary / Index B batrachotoxin: Meaning and Definition of Find definitions for: ba•trach•o•tox•in Pronunciation: (bu-trak"u-tok'sin, ba"tru-kō-), [key] — n. Pharm. a venom, CHNO, obtained from skin secretions of Colombian frogs of the genus Pyllobates and used experimentally in neurology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. batrachian bat ray 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