East European, but could be French (6)
I believe the answer is:
polish
'east european' is the definition.
'polish' can be an answer for 'european' (I've seen this before). I am not certain of the 'east' bit.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for polish that I've seen before include "Shine with cloth,buff" , "Shine up the nationality" , "Gloss - refinement" , "Rub until shiny" , "Buff up - foreign language" .)