Curing (7)
![Ross](/clue/static/ross-mug.min.png)
'curing' is the definition.
('heal' can be a synonym of 'cure')
This is all the clue.
(Other definitions for healing that I've seen before include "Mending" , "Restoring to health" , "curing" , "Getting better" , "Recovering, becoming healthy" .)