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Definitions of czar:

noun:   a person having great power
noun:   a male monarch or emperor (especially of Russia prior to 1917)
name:  A surname (very rare: popularity rank in the U.S.: #57781)

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Alternative Terms
caesar nunnery octavius authoritarian malfunction russia absolute-monarchy parliament tsar-disambiguation search-and-rescue bulgarian-language macedonian-language montenegrin-language serbian-language ukrainian-language scientific-transliteration english-language slavs monarchy emperor ancient-rome byzantine-empire pope ecumenical-patriarch-of-constantinople bulgaria serbia poland basileus-2 hellenistic-civilization roman-empire church-slavonic-language west-slavic-languages epitaph boris-i-of-bulgaria christianization-of-bulgaria medieval-greek simeon-i-of-bulgaria ichirgu-boil mostich preslav croatia kaloyan-of-bulgaria peter-i-of-bulgaria ottoman-empire history-of-early-ottoman-bulgaria sultan knyaz ferdinand-i-of-bulgaria paisius istoriya-slavyanobolgarskaya stefan-uro-iv-du-an-of-serbia stefan-uro-v-of-serbia skopje easter helena-of-bulgaria simeon-uro john-uro vuka-in-mrnjav-evi macedonia-region prince-marko bosniaks tvrtko-i-of-bosnia serb bosnia lazar-of-serbia epan-mali march-6 1882 december 1918 by-the-grace-of-god slovenia list-of-russian-rulers kievan-rus yaroslav kiev mongols tatars mikhail-yaroslavich golden-horde ivan-iii-of-russia grand-duchy-of-moscow hanseatic-league vasili-iii-of-russia nicholas-ii third-rome fall-of-constantinople maximilian-i holy-roman-empire ivan-iv-of-russia jacques-margeret false-dmitriy-i charles-v-holy-roman-emperor peter-the-great crimea catherine-ii-of-russia chersonesos congress-poland czar autocracy