Swordsman (6)
I believe the answer is:
fencer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">swordsman</span>' is the definition.<br/ ><span class="explanation-format__explanation">(fencers use swords)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fencer that I've seen before include "He sports with swords" , "One with flashing blade" , "A sportsman with swords" , "His sport is swordplay" , "secures a boundary" .)