Lewis & Short

Căprĭcornus, i, m. [caper-cornu; cf. in Gr. αὶγοκερεύς], Capricorn (having a goat’s horns), the sign of the zodiac which the sun enters at the winter solstice (opp. Cancer), Varr 2, 1, 8; Cic. N. D. 2, 44, 112; id. Arat. 59 (293); Hor. C. 2, 17, 20; Ov. F. 1, 651; Plin. 2, 16, 13, § 64 sq.; Macr. S. 1, 17; Hyg. Fab. 196; id. Astr. 2, 28.