Item in a trunk (4)
I believe the answer is:
jack
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">item in a trunk</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 jack that I've seen before include "Knave; raising device" , "elevator?" , "Jill's companion" , "car tool" , "Target ball in bowls" .)