Unspecified item (8)
I believe the answer is:
anything
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unspecified item</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 anything that I've seen before include "It doesn't matter what one does" , "Unspecified object" , "------- Goes, Cole Porter musical" , "Musical by 14" , "Aught" .)