Healthy prune (4)
I believe the answer is:
trim
I believe this clue is a double definition.
'healthy' is the first definition.
(thesaurus)
'prune' is the second definition.
('trim' can be a synonym of 'prune')
(Other definitions for trim that I've seen before include "Pare; in good order" , "Neaten by cutting" , "Make smooth by cutting away irregular parts" , "Additional decoration, in good order" , "Prune or pare" .)