Arm support (5)
I believe the answer is:
sling
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">arm support</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 sling that I've seen before include "Support bandage; drink" , "Stone-throwing weapon" , "Catapult or support as for injured arm" , "Primitive weapon" , "Keeping afloat" .)