Urus \U"rus\, n. [L.; of Teutonic origin. See {Aurochs}.] (Zool.) A very large, powerful, and savage extinct bovine animal ({Bos urus} or {Bos primigenius}) anciently abundant in Europe. It appears to have still existed in the time of Julius Caesar. It had very large horns, and was hardly capable of domestication. Called also, {ur}, {ure}, and {tur}. [1913 Webster]