czar noun
plural czars also tsars or tzars
plural czars also tsars or tzars
Learner's definition of CZAR
[count]
1
: the title of the ruler of Russia before 1917（俄国）沙皇 2 chiefly US
a : a very powerful person in a particular business or activity（某领域的）独揽大权者 b —
used as an unofficial title for the person who is in charge of a government office or department（政府部门的）头目，首脑