horn Copy link Outline I. NaturalII. Artificial, something made of h.1. cornu2. buccĭna (a wind instrument) • horn: I. Natural: cornu, ūs or u, n.: Cic.: Plin. Made of h., corneus: a lantern of h., laterna c., Mart. 14, 62, lem.: having h.s, corniger, cornutus (v. horned). II. Artificial, something made of h.: 1. cornu: arms, h.s, trumpets, arma, cornua, tubae, Cic. Sull. 5, 17: to pour in through a h. (funnel), per c. infundere, Col. 6, 2. 2. buccĭna (a wind instrument): the hoarse h., rauca b., Virg.: Ov.