Any thing (4)
I believe the answer is:
item
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">any thing</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 item that I've seen before include "Detail - entry" , "Whole individual unit" , "section of magazine" , "Single unit" , "Individual article or unit" .)