Czar

from WordNet (r) 3.0 (2006)

czar
    n 1: a male monarch or emperor (especially of Russia prior to
         1917) [syn: {czar}, {tsar}, {tzar}]
    2: a person having great power

from The Collaborative International Dictionary of English v.0.48

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]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

CZAR. A title of honor which is assumed by the emperor of all the Russias. 
See Autocracy.

from Moby Thesaurus II by Grady Ward, 1.0

46 Moby Thesaurus words for "czar":
      Dalai Lama, Holy Roman Emperor, Inca, Kaiser, Simon Legree,
      absolute monarch, absolute ruler, all-powerful ruler, ardri,
      arrogator, autarch, autocrat, bey, cacique, caesar, cham,
      commissar, despot, dictator, disciplinarian, driver, duce,
      hard master, kaid, khan, martinet, mikado, negus, oligarch,
      oppressor, padishah, pendragon, pharaoh, rig, sachem, sagamore,
      shah, sheikh, shogun, slave driver, stickler, tenno, tycoon,
      tyrant, usurper, warlord

from Who Was Who: 5000 B. C. to Date

CZAR

 See Russia.