(1):

(n. pl.) The twelfth sign of the zodiac, marked / in almanacs.

(2):

(n. pl.) A zodiacal constellation, including the first point of Aries, which is the vernal equinoctial point; the Fish.

(3):

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