Marshal (7)
I believe the answer is:
sheriff
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">marshal</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sheriff that I've seen before include "Local officer" , "court officer" , "US law enforcement officer" , "US law-enforcement officer" , "Crown's county officer" .)