nounpl. (see fish) -·fish·, -·fish·es
any of a genus (Istiophorus, family Istiophoridae) of large, tropical marine billfishes with elongated scales, a sail-like dorsal fin, and a sword-shaped upper jaw
nounpl. sailfish, or sail·fish·es
Either of two large marine fishes, Istiophorus albicans of the Atlantic Ocean or I. platypterus of the Indian and Pacific Oceans, having a large saillike dorsal fin and an elongated, spearlike upper jaw.
(plural sailfishes or sailfish)
- A fish of the genus Istiophorus, having a characteristic sail-like fin on its back.