The end of the Greek world?

I believe the answer is:

omega

(Other definitions for omega that I've seen before include "Traditional story" , "Athenian character" , "Final Greek letter" , "letter from abroad" , "Greek finalist" .)

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.