Clergyman rested south of cove (8)
I believe the answer is:
chaplain
'clergyman' is the definition.
(chaplain is a kind of clergyman)
'rested south of cove' is the wordplay.
'rested' becomes 'lain' (lying is a kind of resting).
'south of' is a charade indicator (letters next to each other).
'cove' becomes 'chap' (I've seen this before).
'lain' put after 'chap' is 'CHAPLAIN'.
(Other definitions for chaplain that I've seen before include "Member of clergy ministering to an organisation" , "cleric" , "Armed services clergyman" , "Clergyman attached to an institution, such as the army" , "sky pilot" .)