a town of European Russia, in the government of Taurida, stands in an unhealthy position on the isthmus of the same name, joining the Crimea to the mainland, 88 miles N.N.W. of Simferopol. It is defended by irregular wooden fortifications and by a strong castle. There are here a Greek church and a mosque; and large fairs are held, frequented chiefly by the Nogai Tartars. The principal trade carried on is salt, which is obtained in the neighbouring steppes. Pop. (1849) 4116. The isthmus of Perekop is about 20 miles long, and 4 miles broad at the narrowest part. It separates the Gulf of Sivach on the E. from that of Perekop on the W., and where narrowest is crossed by a rampart and ditch.