Child has a point to convey (4)
I believe the answer is:
tote
'convey' is the definition.
(I've seen this before)
'child has a point' is the wordplay.
'child' becomes 'tot' (term for a young child).
'has' is a charade indicator (letters next to each other).
'a point' becomes 'e' (compass point).
'tot'+'e'='TOTE'
'to' acts as a link.
(Other definitions for tote that I've seen before include "hump" , "system for betters" , "System of betting on horse races" , "Wield or carry something heavy" , "system that could be for the better" .)