FREIBURG, a town of Germany in Prussian Silesia, on the Polsnitz, 35 m. S.W. of Breslau, by rail. Pop. (1933) 9,137. Its industries include watch-making, linen-weaving and glass-making. In the neighbourhood are the old and modern castles of the Fur stenstein family, whence the town is sometimes distinguished as Freiburg unter dem Fiirstenstein.