(n)large toothless marine food fish with a long swordlike upper jaw; not completely cold-blooded i.e. they are able to warm their brains and eyes: worldwide in warm waters but feed on cold ocean floor coming to surface at night, Syn.Xiphias gladius
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
n. 1. (Zool.) (a) A very large oceanic fish (Xiphias gladius), the only representative of the family Xiphiidae. 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. (b) The gar pike. (c) The cutlass fish. [ 1913 Webster ]
2. (Astron.) A southern constellation. See Dorado, 1. [ 1913 Webster ]
Swordfish sucker (Zool.), a remora (Remora brachyptera) which attaches itself to the swordfish. [ 1913 Webster ]