Definition of puffer fish
1
: any of a family (Tetraodontidae) of chiefly tropical scaleless marine bony fishes which can distend themselves to a globular form and most of which are highly poisonous
— called also blowfish, globefish, swellfish
— compare fugu
2
: any of various fish of the same order (Tetraodontiformes) as the puffer fish
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Merriam-Webster unabridged
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Time Traveler for puffer fish
The first known use of puffer fish was in 1869
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