a town of Prussia, in the province of Düsseldorf, near the union of the Erft and the Rhine, 21 miles N.W. of Cologne. It is surrounded by walls, and protected by towers and ditches. The principal building is the church of St Quirinus, which was built in the thirteenth century, and exhibits a curious specimen of the transition from the round to the pointed style in architecture. The town has also two other churches, a synagogue, a school, a lunatic asylum, orphan's hospital, &c. Manufactures of cotton and woollen cloth are carried on here; and there is a considerable trade, especially in corn, for which Neuss is the principal market in Rhenish Prussia. This town, under the name of Novesium, was founded by the Romans under Drusus, and is frequently mentioned by Tacitus. Pop. 9567.