Dissolute fellow’s garden tool (4)
I believe the answer is:
rake
I believe this is a double definition.
'dissolute fellow's' is the first definition.
(historical term for an immoral man)
'garden tool' is the second definition.
(I've seen this before)
(Other definitions for rake that I've seen before include "Dissipated type; garden implement" , "a string of railway wagons" , "Garden tool or loose fellow" , "Garden tool with prongs" , "Smooth - Lothario" .)