One-eyed Norse god (4)
I believe the answer is:
odin
'one-eyed norse god' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for odin that I've seen before include "Norse god, husband of Frigg, father of Thor" , "Chief Norse god" , "Mythological Norse deity" , "who's worshipped" , "King of Norse gods" .)