Pisces

||Pis"ces (?), n. pl. [L. piscis a fish.] 1. (Astron.) (a) The twelfth sign of the zodiac, marked ♓ in almanacs. (b) A zodiacal constellation, including the first point of Aries, which is the vernal equinoctial point; the Fish.

2. (Zoöl.) The class of Vertebrata that includes the fishes. The principal divisions are Elasmobranchii, Ganoidei, and Teleostei.