- (historical) An emperor of Russia (before 1917) and of some South Slavic kingdoms.
- (figuratively) A person with great power; an autocrat.
- (informal, politics, US) An appointed official tasked to regulate or oversee a specific area.
- (emperor of Russia): Officially, emperors after 1721 were styled imperator (Ð¸Ð¼Ð¿ÐµÑ€Ð°Ñ‚Ð¾Ñ€ (imperat)) rather than tsar (Ñ†Ð°Ñ€ÑŒ (carÊ¹)); however, the latter is commonly applied to them as well.
- Although commonly believed to mean specifically a Russian emperor, this is not necessarily the case.
- The spelling czar is the most common one in the US, especially in the figurative and informal senses. Scholarly literature prefers tsar.