Plant with soothing properties (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
aloe
(Other definitions for aloe that I've seen before include "Succulent plant (may be bitter!)" , ". . . . vera, soothing plant" , "Succulent plant (4) 5532" , "has a bitter taste" , "shrub" .)