A continental urbanity (6)

I believe the answer is:

polish

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'a continental urbanity' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Maybe there's an association between them I don't understand?

This is all the clue.

Can you help me to learn more?

(Other definitions for polish that I've seen before include "make things shiny" , "Buff - from Poland" , "Of one from Warsaw, say" , "Shine up in Warsaw" , "Rub - European" .)

I've seen this clue in the Evening Standard.

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