Seductive woman
I believe the answer is:
vamp
'seductive woman' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for vamp that I've seen before include "18 across musically -- seductress" , "Flirt" , "Improvise unskilfully" , "Jazzy passage - temptress" , "Seductive woman - improvised accompaniment" .)