Magistrate’s point accepted by minister at conclusion of case (5)
I believe the answer is:
'magistrate's' is the definition.
(I've seen this before)
'point accepted by minister at conclusion of case' is the wordplay.
'point' becomes 'e' (E is an example).
'accepted by' is an insertion indicator.
'minister' becomes 'rev' (I've seen this before**).
'at' says to put letters next to each other.
'conclusion of' says to take the final letters.
The last letter of 'case' is 'e'.
'e' placed into 'rev' is 'reev'.
(Other definitions for reeve that I've seen before include "The bailiff to run a rope through" , "Thread (rope) through a ring, old official" , "old-fashioned official" , "fasten rope" , "Chief magistrate, formerly" .)