aurochs
Concise Oxford English Dictionary © 2008 Oxford University Press:
aurochs /ˈɔːrɒks, ˈaʊ-/
▶noun (pl. same) a large extinct wild ox that was the ancestor of domestic cattle. [Bos primigenius.]
– origin C18: from Ger., var. of Auerochs, from Old High Ger. ūrohso, from ūr + ohso ‘ox’.
'aurochs' also found in these Oxford entries:

