Region around the North Pole (6)
I believe the answer is:
arctic
'region around the north pole' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for arctic that I've seen before include "-- Circle; -- fox" , "Of regions around the North Pole" , "Freezing cold like North Pole" , "Of North polar regions" , "Relating to the cold North" .)