'Tsar' definitions:

Definition of 'tsar'

From: WordNet
noun
A male monarch or emperor (especially of Russia prior to 1917) [syn: czar, tsar, tzar]

Definition of 'Tsar'

From: GCIDE
  • Tsar \Tsar\, n. The title of the emperor of Russia. See Czar. [1913 Webster] Tsarina

Definition of 'tsar'

From: GCIDE
  • czar \czar\ (z[aum]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 tsar and tzar.] [1913 Webster]