Head of the Roman Catholic Church (4)
I believe the answer is:
pope
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">head of the roman catholic church</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pope that I've seen before include "Vatican head" , "Catholic leader" , "man of great authority" , "English poet, d. 1744" , "Writer" .)