Poles returned to gather tiny fruit (8)
I believe the answer is:
sweetsop
'fruit' is the definition.
(sweetsop is a kind of fruit)
'poles returned to gather tiny' is the wordplay.
'poles' becomes 'posts'.
'returned' is a reversal indicator.
'to gather' is an insertion indicator.
'tiny' becomes 'wee' (I've seen this before).
'posts' backwards is 'stsop'.
'stsop' enclosing 'wee' is 'SWEETSOP'.
(Other definitions for sweetsop that I've seen before include "Custard apple" , "West Indian fruit" , "Tropical shrub" , "American shrub" , "fruit tree" .)