Definition of aurochs noun from the Oxford Advanced Learner's Dictionary

 

aurochs

 noun
noun
BrE BrE//ˈɔːrɒks//
 
; NAmE NAmE//ˈɔːrɑːks//
 
; BrE BrE//ˈaʊrɒks//
 
; NAmE NAmE//ˈaʊrɑːks//
 
(pl. aurochs)
 
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a large wild ox that existed in the past 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’.
See the Oxford Advanced American Dictionary entry: aurochs