Fleshy succulent (4)
I believe the answer is:
aloe
'fleshy succulent' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aloe that I've seen before include "has a bitter taste" , "Genus of bitter herbs" , "Plant source of purgative drug" , ". . . . vera, soothing plant" , "Bitter drug from a leaf juice" .)