\Xiph"i*as\, n. [L., a swordfish, a sword-shaped comet,
fr. Gr. xifi`as, fr. xi`fos a sword.]
1. (Zo["o]l.) A genus of fishes comprising the common
   swordfish.
2. (Anat.)
   (a) The constellation Dorado.
   (b) A comet shaped like a sword