Definition of barracuda:
- Alt. of Barracouata
- Any of several voracious pikelike marine fishes allied to the gray mullets, constituting the genus Sphyraena and family Sphyraenidae. The great barracuda ( S. 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. S. Argentea of the Pacific coast and S. sphyraena of Europe are smaller species, and are used as food.