Trier, Latin Augusta Treverorum, city (1994 pop. 99,183), Rhineland-Palatinate, SW Germany, a port on the Moselle (Ger. Mosel) River, near the Luxembourg border. It is also known, in English, as Treves (trEvz) and, in French, as Tries (trev). Trier is an industrial city and the main center of the Moselle wine region. Manufactures include textiles, beer, tobacco products, machinery, and leather goods.