Law enforcer (9)
I believe the answer is:
policeman
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">law enforcer</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 policeman that I've seen before include "Law enforcer" , "Copper" , "Constable" , "officer" , "He's responsible for the maintenance of public order" .)