Crossword Genius

European may be French (6)

Ross

I believe the answer is:

polish

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'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" .)

I've seen this clue in The Globe and Mail and The Guardian.
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