February Revolution abdicator (4)

I believe the answer is:

tsar

(Other definitions for tsar that I've seen before include "Old Russian ruler" , "Nicholas II, say" , "Absolute ruler" , "Autocrat" , "Potentate" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.