Crossword Genius

1998 Robert De Niro crime thriller (5)

Ross

I believe the answer is:

ronin

(Another definition for ronin that I've seen is " samurai without a lord".)

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.