AUROCHS

aurochs, urus, Bos primigenius

(noun) large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle

wisent, aurochs, Bison bonasus

(noun) European bison having a smaller and higher head than the North American bison

Source: WordNet® 3.1

Etymology

Noun

aurochs (plural aurochs or aurochses or aurochsen)

An extinct European mammal, Bos primigenius, the ancestor of domestic cattle.

(zoology) The European bison (Bison bonasus, or Europæus).

Source: Wiktionary

Au"rochs, n. Etym: [G. auerochs, OHG. ; (cf. AS. ) + ohso ox, G. ochs. Cf. Owre, Ox.] (Zoöl.)

Definition: The European bison (Bison bonasus, or Europæus), once widely distributed, but now nearly extinct, except where protected in the Lithuanian forests, and perhaps in the Caucasus. It is distinct from the Urus of Cæsar, with which it has often been confused.

Source: Webster’s Unabridged Dictionary 1913 Edition