Azov, a zof', SEA OF. an arm of the Black Sea, with which it is united by the Strait of Kertch. Its length is about 170 miles, its breadth about 80 miles and its greatest depth not more than 8 fathoms. The western part, called the Putrid Sea, is separated from the main expanse by a long sandy belt called Arabat, along which runs a military road. The sea teems with fish. The Don and other rivers enter it, and its waters are very fresh.