Service is still nothing without stuffing (8)
I believe the answer is:
evensong
'service' is the definition.
(type of church service)
'still nothing without stuffing' is the wordplay.
'still' becomes 'even so' (both can mean 'nonetheless').
'without stuffing' means to remove the middle letters (without the letters stuffed inside the word).
'nothing' with its middle taken out is 'ng'.
'evenso'+'ng'='EVENSONG'
'is' acts as a link.
(Other definitions for evensong that I've seen before include "Anglican service" , "Church service late in the day" , "Religious service" , "... Prayers" , "Late afternoon church service" .)