Magician's hiding place
I believe the answer is:
sleeve
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">magician's hiding place</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sleeve that I've seen before include "Some wear their hearts on it" , "It covers the arm" , "Record-holder" , "Cover for arm and vinyl record" , "Cover for a gramophone record" .)