It's the Japanese name for certain species of puffer fish that contain lethal poison but can be eaten as a delicacy
[DOC] [TLE] Five Japanese men poisoned by puffer fish after 'eating highly ... [PAR] Mar 2, 2015 ... Puffer fish - also called blowfish or fugu in Japanese - are the ... and skin contain 
tetrodotoxin, 100 times more lethal than cyanide.