Precise account by member of clergy (8)
I believe the answer is:
accurate
'precise' is the definition.
('accurate' can be a synonym of 'precise')
'account by member of clergy' is the wordplay.
'account' becomes 'ac'.
'by' is a charade indicator (letters next to each other).
'member of clergy' becomes 'curate' (I've seen this before).
'ac'+'curate'='ACCURATE'
(Other definitions for accurate that I've seen before include "Correct, free of error" , "Correct in all details" , "Meticulous" , "True!" , "Factual" .)