Whatsit (9)
I believe the answer is:
thingummy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">whatsit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(both can mean an unspecified object)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for thingummy that I've seen before include "Unidentified object" , "whose name one's forgotten" , "unknown object" , "Whatsit" , "what's-its-name" .)