Shah \Shah\ (sh[aum]), n. [Per. sh[=a]h a king, sovereign, prince. Cf. Checkmate, Chess, Pasha.]

The title of the supreme ruler in certain Eastern countries, especially Persia. [Written also schah.]

Shah Nameh. [Per., Book of Kings.]

A celebrated historical poem written by Firdousi, being the most ancient in the modern Persian language. --Brande & C.

Source: Webster's Revised Unabridged Dictionary (1913)