Circular, curved (7)
I believe the answer is:
rounded
I believe this clue is a double definition.
'circular' is the first definition.
(associated in meaning)
'curved' is the second definition.
(thesaurus)
(Other definitions for rounded that I've seen before include "Well-developed; balanced" , "Well-developed; curved" , "(Of the lips) pursed" , "Complete and balanced; made curved" , "Plump" .)