Stuff about chaplain (5)
I believe the answer is:
padre
'chaplain' is the definition.
(I know that chaplain is a type of chaplain)
'stuff about' is the wordplay.
'stuff' becomes 'pad' (padding is a kind of stuffing).
'about' becomes 're' ('re' means regarding or about).
'pad'+'re'='PADRE'
(Other definitions for padre that I've seen before include "Services' chaplain" , "A military clergyman" , "Cleric" , "Man of god - drape (anag)" , "Army chaplain" .)