Cut selectively, purging fruit (5)
I believe the answer is:
prune
I believe this clue is a double definition.
'cut selectively purging' is the first definition.
'fruit' is the second definition.
(prune is a kind of fruit)
(Other definitions for prune that I've seen before include "Cut back the dried plum" , "Shrivelled fruit" , "Trim - dried fruit" , "Dull person" , "A fruit; to cut back" .)