czar

1 ENTRIES FOUND:
czar noun
also tsar or tzar /ˈzɑɚ/
plural czars also tsars or tzars
czar
noun
also tsar or tzar /ˈzɑɚ/
plural czars also tsars or tzars
Britannica Dictionary definition of CZAR
[count]
1 
: the title of the ruler of Russia before 1917
2 
chiefly US
a  : a very powerful person in a particular business or activity
b  — used as an unofficial title for the person who is in charge of a government office or department