ABENSBERG, a town and spa of Germany, in Bavaria, on the Abens, a tributary of the Danube, 18m. S.W. of Regensburg. Pop. (1933) 2,392. Some Roman remains exist in the neighbour hood of the town, which was known to the Romans as Castra Abusina. Here Napoleon defeated the Austrians under the Archduke Louis and Gen. Hiller on April 20, 1809.