Province that borders four Great Lakes (7)

I believe the answer is:

ontario

(Other definitions for ontario that I've seen before include "vast lake" , "Province of central Canada" , "part of Canada" , "city" , "One of the Great Lakes" .)

I've seen this clue in the Universal.

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.