ba·tra·cho·tox·in (bə-trāk'ə-tŏk'sĭn, bāt'rə-kō-) n. A steroid alkaloid derived from skin secretions of the Phyllobates and Dendrobates genera of South American poison-arrow frogs. It is one of the most potent venoms known.
Main Entry: ba·tracho·tox·in Pronunciation: b&-"trak-&-'täk-s&n, "ba-tr&-kO- Function: noun : a very powerfulsteroid venom C31H42N2O6 extracted from the skin of a So. American frog (Phyllobates aurotaenia)