Gardening tool for a dissolute fellow (4)
I believe the answer is:
rake
This clue is a double definition.
'gardening tool' is the first definition.
(I've seen this before)
'dissolute fellow' is the second definition.
(historical term for an immoral man)
'for a' is the link.
(Other definitions for rake that I've seen before include "Playboy" , "Pronged tool with long handle" , "Roue - garden tool" , "Dissolute man of fashion" , "Garden tool or loose fellow" .)