Fencing attack (5)
I believe the answer is:
lunge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fencing attack</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 thrust forward" , "Stab" , "fast movement" , "(Make a) forward thrust" , "sudden movement forwards" .)