Shah (shä), n. [Per. shāh a king, sovereign, prince. Cf. Checkmate, Chess, Pasha.] A former title of the supreme ruler in certain Eastern countries, especially Persia and Iran. [Written also schah.]
[1913 Webster +PJC]

Shah Nameh. [Per., Book of Kings.] A celebrated historical poem written by Firdousi, being the most ancient in the modern Persian language. Brande & C.
[1913 Webster]