Norwegian (5)
I believe the answer is:
norse
'norwegian' is the definition.
(I know that norwegian can be written as Norse)
This is all the clue.
(Other definitions for norse that I've seen before include "Language - senor! (anag)" , "Snore (anag)" , "Relating to ancient Scandinavia" , "Old form of Norwegian" , "Family of Germanic languages spoken in Scandinavia and Iceland" .)