Loop with a running knot (5)
I believe the answer is:
noose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">loop with a running knot</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 noose that I've seen before include "Loop in a rope made with a slip knot" , "Loop formed by means of a slip knot" , "it could endanger your life" , "Loop at the end of a rope" , "Hanging material" .)