Come out again to gather fruit (8)
I believe the answer is:
reappear
'come out again' is the definition.
('appear' can be a synonym for 'come out' so perhaps 'reappear' is OK for 'come out again')
'gather fruit' is the wordplay.
'gather' becomes 'reap' (reaping is a kind of gathering).
'fruit' becomes 'pear' (pear is a kind of fruit).
'reap'+'pear'='REAPPEAR'
'to' acts as a link.
(Other definitions for reappear that I've seen before include "Come into view again" , "Show over" , "crop up again" , "return" , "Turn up again" .)