tsar
🇺🇸
/zɑːr/
🇬🇧
/zɑː(r)/
A tsar is a ruler or emperor, especially one from Russia's history.
The last tsar of Russia was Tsar Nicholas II.
A tsar can also be a person who is in charge of a specific area of policy for a government.
The government appointed a new drug tsar to tackle the issue of substance abuse.