Rutabaga, for one (5)
I believe the answer is:
tuber
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rutabaga for one</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 tuber that I've seen before include "Fleshy underground part of plant" , "One goes underground" , "or still vegetating?" , "Thickened underground stem" , "Rhizome, as of potato" .)