Definition of Caspian Sea in English:
Caspian Sea
proper nounˌkaspɪən ˈsiˌkæspiən ˈsi
A large landlocked salt lake, bounded by Russia, Kazakhstan, Turkmenistan, Azerbaijan, and Iran. It is the world's largest body of inland water with an area of about 371,800 sq. km (143,550 sq. miles). Its surface lies 28 m (92 ft) below sea level.
Definition of Caspian Sea in US English:
Caspian Sea
proper nounˌkaspēən ˈsēˌkæspiən ˈsi
A large landlocked salt lake, bounded by Russia, Kazakhstan, Turkmenistan, Azerbaijan, and Iran. The world's largest body of inland water, its surface lies 92 feet (28 m) below sea level.