- Any species of fish of the family Tetraodontidae that have the ability to inflate themselves to a globe several times their normal size by swallowing water or air when threatened; puffer, blowfish, swellfish, balloonfish, globefish.
- A delicacy popular in Japan served raw as sushi that may, if improperly prepared, contain deadly levels of neurotoxins; (Japanese) fugu.
Etymology: English puffer (from puff) + fish.
- Dutch: kogelvis
- German: Kugelfisch
- Italian: pesce palla
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