/ ˈɔːrɒks; ˈaʊr-; NAmE -rɑːks/ noun
( pl. aur·ochs ) a large wild ox that existed in the past
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WORD ORIGIN
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.