a large and populous town in Poland, in Lithuania, and capital of a duchy of the same name; famous for three battles gained here by Constantine duke of Olrog over the Tartars, in the reign of Sigismund I. It is seated on the river Slucek, 72 miles south-east of Minsk, and 70 south of Novogrodeck. E. Long. 27. 44. N. Lat. 53. 2.