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batrachotoxin
batrachotoxin n.
Brit. 
/ˌbatrəkəʊˈtɒksɪn/
, /ˌbatrəkəʊˈtɒksɪn/U.S. /ˌbætrəkoʊˈtɑks(ə)n/
Biochemistry a highly poisonous alkaloid neurotoxin, which occurs in skin secretions of frogs of the South and Central American genus Phyllobates (family Dendrobatidae); (also) any of a family of compounds having a similar structure; cf. poison dart frog n. at poison n. Compounds 2a.Batrachotoxin has also been found in New Guinea in several species of songbird and in certain beetles of the family Melyridae. It has been suggested that consumption of these beetles is responsible for the presence of batrachotoxin in the birds (and perhaps the frogs)./ˌbætrəkoʊˈtɑks(ə)n/ΚΠ
1965 J. W. Daly et al. in Jrnl. Amer. Chem. Soc. 87 124/2 Our recent expedition..to the Choco rain forest of Western Columbia netted 2400 frogs whose skin extracts yielded a total of 30mg. of the crystalline major active principle which we name batrachotoxin.
1997 San Diego Union Tribune (Electronic ed.) 13 Aug. e1 Batrachotoxin renders muscles inactive and is one of the deadliest natural substances known. The amount contained in a one-inch frog can kill 100 people.
2002 Guardian 16 May (Online section) 10/4 The batrachotoxins..are powerful activators of proteins found in the cell wall known as sodium ion channels.
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