Canadian prairie province (12)
I believe the answer is:
saskatchewan
'canadian prairie province' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for saskatchewan that I've seen before include "Canadian province; what's askance (anag.)" , "One of Canada's prairie provinces" , "province overseas" , "From a large area of Canada" , "Province of 5 down" .)