Seat for a service (3)
I believe the answer is:
pew
'seat for a service' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pew that I've seen before include "Long church seat" , "Bench-like seat in a church" , "Where some of the flock rest" , "Long bench in a church" , "Part of flock sitting here" .)