1. blowfish, sea squab, puffer, pufferfish, saltwater fish
usage: delicacy that is highly dangerous because of a potent nerve poison in ovaries and liver
2. puffer, pufferfish, blowfish, globefish, plectognath, plectognath fish
usage: 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