Shrub or herbaceous plant (8)
I believe the answer is:
acanthus
I believe this is a double definition.
'shrub' is the first definition.
(I've seen this before)
'herbaceous plant' is the second definition.
(acanthus is a kind of herbaceous plant)
(Other definitions for acanthus that I've seen before include "Leaf, sometimes carved on furniture" , "Cash, aunt, for this plant" , "Bush?" , "Herbaceous shrub" , "A staunch sort of plant?" .)