an animal like a large cow, with hair on its head and shoulders.——朗文当代大辞典

orig. A species of Wild Ox ( Bos Bison Gesner, B. bonasus Linn.), formerly prevalent in Europe, including Great Britain, and still existing in a protected state in forests of Lithuania. (This was the βίσων of Pausanias and Oppian, the βόνασος of Aristotle and Ælian, the bĭson and bonāsus of Pliny and Solinus, the bison of Seneca and Martial; plural bisontes, in later writers visontes, vesontes, bissontes. It is now sometimes called the Aurochs, a name belonging rightly to the extinct Bos Urus, the Urus of Cæsar. See the exhaustive article Wisunt, in Schade, Altdeutsches Wbch.)——牛津当代大辞典  @en