What is "xiphias gladius"

Swordfish \Sword"fish`\, n.

1. (Zo["o]l.)

   1. A very large oceanic fish ( Xiphias gladius), the only representative of the family Xiphiid[ae]. It is highly valued as a food fish. The bones of the upper jaw are consolidated, and form a long, rigid, swordlike beak; the dorsal fin is high and without distinct spines; the ventral fins are absent. The adult is destitute of teeth. It becomes sixteen feet or more long.

   2. The gar pike.

   3. The cutlass fish.

2. (Astron.) A southern constellation. See Dorado, 1.

   Swordfish sucker (Zo["o]l.), a remora ( Remora brachyptera) which attaches itself to the swordfish.