Roman chief magistrate (6)
I believe the answer is:
consul
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">roman chief magistrate</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 consul that I've seen before include "Official representative of a state living abroad" , "Old Roman official" , "Chief magistrate in ancient Rome" , "Ambassador" , "Diplomat abroad" .)