European sophistication (6)
I believe the answer is:
polish
I believe this clue is a double definition.
'european' is the first definition.
(I've seen this before)
'sophistication' is the second definition.
(thesaurus)
(Other definitions for polish that I've seen before include "taught in finishing school?" , "Shine up the nationality" , "European language - refinement" , "Rub - European" , "Rub to make the surface shine" .)