swordfish(n = noun.animal) xiphias gladius - 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;
A very large oceanic fish (Xiphias gladius), the only representative of the family Xiphiidæ. 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. [1913 Webster]
A southern constellation. See Dorado, 1. [1913 Webster]
Swordfish sucker(Zoöl.), a remora (Remora brachyptera) which attaches itself to the swordfish.