The chaplain's home again (5)
I believe the answer is:
padre
'the chaplain's' is the definition.
(padre is a kind of chaplain)
'home again' is the wordplay.
'home' becomes 'pad' (pad can mean someone's home).
'again' becomes 're' (prefix meaning 'again').
'pad'+'re'='PADRE'
(Other definitions for padre that I've seen before include "Services' chaplain" , "Army chaplain" , "clerical worker" , "Priest, chaplain" , "non-combatant officer" .)