Scandinavian thunder god (4)
I believe the answer is:
thor
'scandinavian thunder god' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for thor that I've seen before include "Imitative artistic work" , "Scandinavian thunder-god" , "Germanic deity" , "The Thunderer" , "Norse god for whom Thursday is named" .)