Fruit for mother and child (6)
I believe the answer is:
damson
'fruit' is the definition.
(I know that damson is a fruit)
'mother and child' is the wordplay.
'mother' becomes 'dam' (female parent of an animal).
'and' is a charade indicator (letters next to each other).
'child' becomes 'son' (male child).
'dam'+'son'='DAMSON'
'for' acts as a link.
(Other definitions for damson that I've seen before include "Acid purple plum" , "jam producer" , "Type of plum" , "Small tart plum" , "Ma, Don's a fruit" .)