Sleeve end (4)
I believe the answer is:
cuff
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sleeve end</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cuff that I've seen before include "by one hand" , "Blow - on the wrist?" , "End of arm" , "Light blow with the open hand" , "Smack; Moonstone sergeant" .)