Definition of fugu
: any of various very poisonous puffer fishes (family Tetraodontidae) that contain tetrodotoxin and that are used as food in Japan after the toxin-containing parts are removed
Recent Examples of fugu from the Web
Search [fugu poison] to find that the poison is tetrodotoxin, aka TTX or tetrodox, and is found primarily in the liver of the puffer fish.
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Origin and Etymology of fugu
First Known Use: 1909
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