Polish translation (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
gloss
This clue is a double definition.
'polish' is the first definition.
('gloss' can be a synonym of 'polish')
'translation' is the second definition.
(I've seen this before)
(Other definitions for gloss that I've seen before include "Misleading explanation" , "Sheen - paint" , "explanation for obscure word" , "Superficial appearance" , "Polish - explanatory comment" .)