or NISHI, a town of European Turkey, in the province of Servia, stands in a fertile and well-cultivated plain, between two branches of the Balkan Mountains, 60 miles S.S.W. of Widdin, and 130 S.E. of Belgrade. It is separated into two parts by the River Nissava, an affluent of the Morava. The division on the right side, occupied by Turks, is surrounded by good fortifications and a dry ditch; while on the other side is a bazaar, defended by a trench and palisade; and beyond this is the unprotected Christian quarter. The fortifications are mounted with numerous large guns; and Nissa commands the communication between the provinces of Servia, Bulgaria, and Roumelia. The principal building is the palace of the pasha. This place was anciently called Naissus; and is remarkable as the birth-place of the Emperor Constantine. It was taken by Amurath II. in 1389, and again by the Austrians in 1737. Pop. 10,000.