Little fruit from Greek imitator (5)
I believe the answer is:
grape
'little fruit' is the definition.
'greek imitator' is the wordplay.
'greek' becomes 'gr'.
'imitator' becomes 'ape' ('ape' can be a synonym of 'imitator').
'gr'+'ape'='GRAPE'
'from' acts as a link.
(Other definitions for grape that I've seen before include "Green/black fruit" , "Wine fruit" , "Vineyard fruit" , "Pager (anag.)" , "Vine fruit" .)