Lake between Ohio and Ontario (4)
I believe the answer is:
erie
'lake between ohio and ontario' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for erie that I've seen before include "Great lake in Eire" , "N. American lake" , "The lake sounds weird" , "A Great American lake - sounds spooky" , "Superior companion" .)