Naive person at home with no money (8)
I believe the answer is:
innocent
'naive person' is the definition.
(I've seen this before)
'home with no money' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'with' says to put letters next to each other.
'money' becomes 'cent' (eg denomination of dollars).
'in'+'no'+'cent'='INNOCENT'
'at' acts as a link.
(Other definitions for innocent that I've seen before include "Naive person" , "Irreproachable" , "without blood on hands?" , "Free of any blame" , "white" .)