Fencing thrust (5)
I believe the answer is:
lunge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fencing thrust</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lunge that I've seen before include "Sudden forward motion" , "Thrust forward as in fencing" , "Make a thrusting forward movement" , "dive" , "Sudden thrust in fencing" .)