Prayer from setter in hole (7)
I believe the answer is:
angelus
'prayer' is the definition.
(Angelus is an example)
'setter in hole' is the wordplay.
'setter' becomes 'gel' (something which sets).
'in' is an insertion indicator.
'hole' becomes 'anus' (I am not sure about this - if you are sure you should believe this answer much more).
'gel' put within 'anus' is 'ANGELUS'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for angelus that I've seen before include "Midday prayer" , "Short prayer" , "Thrice daily prayer of Roman Catholics" , "Prayer at noon and 6pm" , "(Bell calling Catholics to) prayer" .)