Caspian Casparian • casque · · · Info · Definitions · Characters · · Caspian · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a large saltwater lake between Iran and Russia fed by the Volga River; the largest inland body of water in the world. Synonyms: Caspian Sea. · · Noun Definition 1 Characters · · C latin capital letter c U+0043 a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E p latin small letter p U+0070 s latin small letter s U+0073