Lewis Short
būcŭlus | bōcŭlus, ae | būcŭla (noun M.f) : (also ), , dim. bos
* A young bullock, a steer, Col. 6, 2, 4; Front. Strat. 1, 5, 26.—More freq. and class.
* Subst.: , , , a young cow, a heifer, Verg. G. 1, 375; 4, 11; id. E. 8, 86.
* As a work of art, Cic. Div. 1, 24, 48. The statue of a brazen cow at Athens, the work of Myron, was especially distinguished, Cic. Verr. 2, 4, 60, § 135; id. Div. 1, 24, 48; cf. Plin. 34, 8, 19, § 57.
Charlton T. Lewis, Charles Short, A Latin Dictionary