End of stage stage worker polished (7)
I believe the answer is:
elegant
'polished' is the definition.
(thesaurus)
'end of stage stage worker' is the wordplay.
'end of' says to take the final letters.
'stage' becomes 'leg' ('leg' can be a synonym of 'stage').
'worker' becomes 'ant' (worker is a type of ant).
The final letter of 'stage' is 'e'.
'e'+'leg'+'ant'='ELEGANT'
(Other definitions for elegant that I've seen before include "luxurious style?" , "Cleverly simple" , "Graceful - refined" , "Fine" , "Teen gal (anag.)" .)