Any of several voracious pikelike marine fishes allied to the gray mullets, constituting the genus Sphyræna and family Sphyrænidæ. The great barracuda (Sphyræna barracuda) of the West Indies, Florida, etc., is often six feet or more long, and as dangerous as a shark. In Cuba its flesh is reputed to be poisonous. Sphyræna Argentea of the Pacific coast and Sphyræna sphyræna of Europe are smaller species, and are used as food. [Webster 1913 Suppl.]
" That of Europe and our Atlantic coast is Sphyræna spet (or Sphyræna vulgaris); a southern species is Sphyræna picuda; the Californian is Sphyræna argentea." [1913 Webster]
A large edible fresh-water fish of Australia and New Zealand (Thyrsites atun). [1913 Webster]

OXFORD DICTIONARY

Barracuda, n. (pl. same or barracudas) a large and voracious tropical marine fish of the family Sphyraenidae.

Etymology

Amer. Sp. barracuda

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