blowfish

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

(noun) any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers. Synonyms: puffer, pufferfish, globefish.