Libertines with dirty teeth? (5)
I believe the answer is:
rakes
'libertines' is the definition.
(rake is a kind of libertine)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rakes that I've seen before include "Dissolute fellows" , "degenerates" , "Searches" , "men who are dissipated" , "scrapes" .)