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English definition of “tsar”

tsar

noun [C] uk (also tzar, US usually czar)   /zɑːr/ us    /zɑːr/

tsar noun [C] (RULER)

(until 1917) the male Russian ruler: Tsar Nicholas I

tsar noun [C] (OFFICIAL)

a person who has been given special powers by the government to deal with a particular matter: The government has appointed a drugs tsar to coordinate the fight against drug abuse.

tsar noun [C] (LEADER)

a powerful person in business or politics: a group of publishing tsars
tsarist
adjective, noun [C] uk (also tzarist, US usually czarist)   /ˈzɑː.rɪst/ us    /ˈzɑːr.ɪst/
the tsarist empire Tsarist Russia
(Definition of tsar from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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