a fortified seaport in the S Crimea, in S Ukraine: famous for its heroic resistance during sieges of 349 days in 1854–55, and 245 days in 1941–42. 350,000.
Se·vas·to·pol (sə-vās'tə-pōl', sěv'ə-stō'pəl) A city of southern Ukraine in the Crimea on the Black Sea west of Yalta. Founded on the site of an ancient Greek colony, it became Russia's principal Black Sea naval base after the late 18th century. The city resisted lengthy sieges during the Crimean War and World War II. Population: 340,000.