Plant that soothes burns (4)
I believe the answer is:
aloe
'plant that soothes burns' 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 "Flower, maybe vera" , "Bitter drug from a leaf juice" , "O, ale with bitter plant" , "Succulent plant (4) 5532" , "Plant source of purgative drug" .)