puffer

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