a Japanese puffer containing a deadly toxin, tetrodotoxin, in its skin and organs: the white flesh of this fish is served raw as a popular delicacy, esp. in Japan, after it has been carefully removed by a licensed chef
See fugu in American Heritage Dictionary 4
(fo͞oˈgo͞o)
noun
Any of various poisonous fish related to the puffers that are used as food, especially in Japan, after the poisonous skin and organs have been removed.