aurochs
/ˈɔːrɒks/noun
(复同单)
1- a large wild Eurasian ox that was the ancestor of domestic cattle. It was probably exterminated in Britain in the Bronze Age, and the last one was killed in Poland in 1627.原牛（现代家牛之祖, 可能于青铜器时代在英国灭绝, 最后一头1627年在波兰被杀）。亦称 URUS.
1.1
- Bos primigenius, family Bovidae.拉丁名Bos primigenius,牛科。
词源
late 18th cent.: from German， early variant of Auerochs, from Old High German ūrohso, from ūr （form also found in Old English， of unknown origin） + ohso 'ox'.