皇帝,沙皇
Czar \Czar\ (z["a]r), n. [Russ. tsare, fr. L. Caesar C[ae]sar; cf. OPol. czar, Pol. car. ] A king; a chief; the title of the emperor of Russia. [Written also {tzar}
czar n 1: a male monarch or emperor (especially of Russia prior to 1917) [syn: {tsar}, {tzar}] 2: a person having great power