Private group meeting after reverend's last service
I believe the answer is:
dinner set
'service' is the definition.
(dinner set is a kind of service)
'private group meeting after reverend's last' is the wordplay.
'private' becomes 'inner' (I've seen this before).
'group' becomes 'set' (set is a kind of group).
'meeting' is a charade indicator (letters next to each other).
'after reverend's last' becomes 'd' (I can't explain this - if you can you should give a lot more credence to this answer).
'inner'+'set'='innerset'
'innerset' after 'd' is 'DINNER-SET'.
Can you help me to learn more?
(Other definitions for dinner set that I've seen before include "Plates etc" , "might be taken out for a meal" , "Collection of plates and dishes" , "crockery" , "Complete service of plates and dishes for a meal" .)