relating to or denoting the branch of the Indo-European language family that includes Russian, Ukrainian, and Belorussian ( Eastern Slavic), Polish, Czech, Slovak, and Sorbian ( Western Slavic), and Bulgarian, Serbian, Croatian, Macedonian, and Slovene ( Southern Slavic).
relating to or denoting the peoples of central and eastern Europe who speak any of these languages.
noun
[mass noun]
the Slavic languages collectively.See also Slavonic.