urus

A kind of wild bull described by Cæsar; the mountain-bull, which ran wild in Gaul at the period of the Roman invasion, but has long been extinct.

[capitalized] A genus of Bovidæ, including the aurochs and extinct bisons: therefore equivalent to Bison as now employed.

A kind of fossil ox from Eschscholtz Bay, Alaska.

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 Cæsar. It had very large horns, and was hardly capable of domestication. Called also, ur, ure, and tur.

The aurochs.

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