Lake near Niagara Falls (4)
I believe the answer is:
erie
'lake near niagara falls' 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 "One of the Great Lakes" , "Buffalo's lake" , "Great lake in Eire" , "Spooky-sounding" , "Lake between Canada and the US" .)