tetrodotoxin

English Thesaurus

1. a powerful neurotoxin found in the ovaries of pufferfish (noun.substance)

hypernym	:	neurolysin, neurotoxin,
definition	:	any toxin that affects neural tissues (noun.substance)

substance meronym	:	blowfish, puffer, pufferfish, sea squab,
definition	:	delicacy that is highly dangerous because of a potent nerve poison in ovaries and liver (noun.food)