Refined rough girl, slim-waisted (9)
I believe the answer is:
hourglass
'slim-waisted' is the definition.
(as in an hourglass figure)
'refined rough girl' is the wordplay.
'refined' is an anagram indicator.
'girl' becomes 'lass' (lass is a kind of girl).
'rough' anagrammed gives 'hourg'.
'hourg'+'lass'='HOURGLASS'
(Other definitions for hourglass that I've seen before include "Simple timer" , "Old device for telling the time" , "enviable figure?" , "Sort of figure" , "old timer" .)