Said it’s a Nordic veneer (6)
I believe the answer is:
finish
'veneer' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for finish that I've seen before include "Refinement in social graces" , "Pefect" , "Complete (6,3) - See 16" , "train socially" , "Treatment of surface" .)