large recently extinct long-horned European wild ox; considered one of the ancestors of domestic cattle
source: WordNet 3.0
A very large, powerful, and savage extinct bovine animal (Bos urus or 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.
