Slavonic refinement (6)
I believe the answer is:
polish
I believe this is a double definition.
'slavonic' is the first definition.
(Polish is an example)
'refinement' is the second definition.
(I know that refinement can be written as polish)
(Other definitions for polish that I've seen before include "Refine, language" , "European - gloss" , "Make smooth and glossy" , "make things shiny" , "Brush up" .)