aurochs
noun/ˈaʊɹɒks/ · /ˈɔːɹɒks/
Etymology Borrowed from German Aurochs, an early variant of Auerochse, from Middle High German ūrochse (“aurochs”), from Old High German ūrohso (“aurochs”), a compound consisting of ūro (“aurochs”) (from Proto-Germanic *ūraz, *ūrô (“aurochs”)) + ohso (“ox”). Akin to Old English ūr (“aurochs”), Old Norse úrr (“aurochs”), Middle Low German ūrosse (“aurochs”), Old English oxa (“ox”). More at ox.
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An extinct European mammal, Bos primigenius, the ancestor of domestic cattle.