horn/hɔrn; hɔːn/n 1 a) [C] one of the two hard pointed parts on the heads of cows, goats etc [→ antler]〔牛﹑羊等头上的〕角see picture on page 见 A2 页图b) [U] the substance that animals’ horns are made of 角质: ornaments made of rhino horn 犀牛角制成的装饰品2 [C] the thing in a vehicle that you use to make a sound as a warning or signal〔车辆的〕喇叭: He sounded his horn angrily. 他生气地按喇叭。3 [C] a musical instrument made of metal, that you play by blowing 号〔一种乐器〕