Libertine (4)
I believe the answer is:
rake
'libertine' is the definition.
(I know that rake is a type of libertine)
This is all the clue.
(Other definitions for rake that I've seen before include "Garden tool; slope angle" , "Gardening tool for the dissolute fellow" , "Garden tool for a dissolute fellow" , "Progress was visualised for one" , "One with teeth" .)