urus

noun

1. large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle

   noun.animal

   Synonyms aurochs bos primigenius

   Source: WordNet 3.0

2. A very large, powerful, and savage extinct bovine animal (<i>Bos urus or primigenius</i>) anciently abundant in Europe. It appears to have still existed in the time of Julius C&aelig;sar. It had very large horns, and was hardly capable of domestication. Called also, <i>ur</i>, <i>ure</i>, and <i>tur</i>.

   noun

   Source: webster1913