Thingamajig (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">thingamajig</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that thingamajig can be written as doodad)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">thingamajig</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for whatchamacallit that I've seen before include "unknown label?" , "unmemorable thing" , "whatever it is" .)