1. European bison having a smaller and higher head than the North American bison
   - wisent, Bison bonasus 
2. Large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle
   - urus, Bos primigenius

Derived forms: aurochs

Type of: bison, ox, wild ox

Part of: Bos, genus Bison, genus Bos

Encyclopedia: Aurochs

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