Czech :: Czech (n.) The language of the Czechs (often called Bohemian), the harshest and richest of the Slavic languages..
Czechic :: Czechic (a.) Of or pertaining to the Czechs.
Czechs :: Czechs (n. pl.) The most westerly branch of the great Slavic family of nations, numbering now more than 6,000,000, and found principally in Bohemia and Moravia..