Lewis & Short

† xĭphĭas, ae, m., = ξιφίας (swordshaped).

  1. I. A sword-fish: Xiphias gladius, Linn.; Plin. 32, 2, 6, § 15; Ov. Hal. 97.
  2. II. A sword-shaped comet, Plin. 2, 25, 22, § 89.