European may be French (6)
I believe the answer is:
polish
'european' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for polish that I've seen before include "tongue" , "Smooth or shine by rubbing" , "Make smooth and glossy" , "Refinement of manners" , "European language - refinement" .)