Senior churchman (10)
I believe the answer is:
archbishop
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">senior churchman</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for archbishop that I've seen before include "Senior prelate" , "Senior cleric" , "High-ranking churchman" , "Chief cleric" , "Laud" .)