n.
Pronunciation: ' au ̇ - ˌ räks, ' o ̇ r- ˌ äks
Function: noun
Inflected Form: plural aurochs
Etymology: German, from Old High German ū rohso, from ū ro aurochs + ohso ox; akin to Old English ū r aurochs ― more at OX
Date: 1766
: an extinct large long-horned wild ox ( Bos primigenius ) of Europe that is the ancestor of domestic cattle