Father goes on foot to get fruit (5)
I believe the answer is:
papaw
'fruit' is the definition.
(papaw is a kind of fruit)
'father goes on foot' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'goes on' is a charade indicator (letters next to each other).
'foot' becomes 'paw' (paw is a kind of foot).
'pa'+'paw'='PAPAW'
'to get' acts as a link.
(Other definitions for papaw that I've seen before include "Custard apple" , "Papaya" , "seedy article" , "fruit tree" .)