Kept woman (9)
I believe the answer is:
courtesan
'kept woman' is the definition.
(courtesan is a kind of kept woman)
This is the entire clue.
(Other definitions for courtesan that I've seen before include "odalisque" , "High-class prostitute" , "Fanny Hill, perhaps" , "Prostitute - mistress of high-ranking man" , "Kept woman" .)