ASS Copy link • ASSasinus. Little ass, asellus. Young ass, colt of an ass, pullus asininus. The ass brays, asinus rudit. A wild ass, onager. As a word of contempt (= fool, dolt) the Romans used asinus only of a simple, sillyperson, [In me quidvis harum rerum convenit Quae sunt dictae in stultum, caudex stipes, asinus, plumbeus, Ter.]: stipes: truncus: aeque hebes ac pecus, (Cic.). Ass’s skin, pellis asinina: milk, lac asininum.