Part of a wineglass (4)
I believe the answer is:
stem
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">part of a wineglass</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 stem that I've seen before include "something growing?" , "Staunch (flow)" , "Main central part as of plant or glass" , "Halt flow" , "Hold back - stock - check" .)