Spiritual home (8)
I believe the answer is:
internal
I believe this clue is a double definition.
'spiritual' is the first definition.
(thesaurus)
'home' is the second definition.
(I know that home can be written as internal)
(Other definitions for internal that I've seen before include "Inside the body" , "Domestic" , "In-house - private" , "Within the body" , "Located inward" .)