a town of Germany, in the Prussian province of Silesia, 16 m. by rail S.E. of Breslau, on the left bank of the Oder. Pop. (1 9 o 5) 9 2 33. It has two Roman Catholic and two Evangelical churches, and a castle. Ohlau is the centre of a tobacco-growing district and has manufactures of tobacco and cigars, machinery, beer, shoes and bricks. It became a town in 1291 and passed to Prussia in 1742. In the 17th and 18th centuries it was often the residence of the dukes of Brieg and of the Sobieski family. See Schulz, Aus Ohlaus Vergangenheit (Ohlau, 1902).