Coquette (4)
I believe the answer is:
minx
'coquette' is the definition.
(I know that coquette can be written as minx)
This is the entire clue.
(Other definitions for minx that I've seen before include "Pert young girl" , "Flirt" , "17 girl" , "Boldly flirtatious young woman" , "miss making mischief" .)