Emily Dickinson Lexicon

ZO'DI-AC, n. [Fr. zodiaque; It. and Sp. zodiaco; L. zodiacus; Gr. ζωδιακος, from ζωον, an animal.]

1. A broad circle in the heavens, containing the twelve signs through which the sun passes in its annual course. The center of this belt is the ecliptic, which is the path of the sun. It intersects the equator at an angle of about twenty three degrees and twenty eight minutes. This is called its obliquity.
2. A girdle. – Milton.