Dense shrubbery (7)
I believe the answer is:
thicket
'dense shrubbery' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for thicket that I've seen before include "Dense group of trees or bushes" , "Wood" , "Coppice" , "A patch of shrubs and small trees" , "dense vegetation" .)