Child at home with no money (8)
I believe the answer is:
innocent
'child' is the definition.
(innocent can mean a child)
'home with no money' is the wordplay.
'home' becomes 'in' (to be in is to be (at) home).
'with' is a charade indicator (letters next to each other).
'money' becomes 'cent' (eg denomination of dollars).
'in'+'no'+'cent'='INNOCENT'
'at' is the link.
(Other definitions for innocent that I've seen before include "Artless or guiltless" , "Naive or not guilty" , "not intending to cause offence?" , "Without sin" , "Free from sin" .)