Tsar

Frae Wikipedia, the free beuk o knawledge
Reception o the Tsar of Roushie in the Moscow Kremlin.

Tsar (Auld Kirk Slavonic: ц︢рь (uisually written thus wi a tilde) or цар, царь; an aa Czar or Tzar in Laitin alphabet leids) is a teetle uosed tae designate certain European Slavic monarchs or supreme rulers.