Forest club (4)
I believe the answer is:
wood
I believe this clue is a double definition.
'forest' is the first definition.
('wood' can be a synonym of 'forest')
'club' is the second definition.
(wood is a kind of club)
(Other definitions for wood that I've seen before include "Driver, perhaps" , "Golf club - tree material" , "Cooing bird" , "Timber" , "Concert promoter" .)