Unopened flower (3)
I believe the answer is:
bud
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unopened flower</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 bud that I've seen before include "Small pre-flower knob on plant" , "Friend" , "Tight flower" , "China to America?" , "Undeveloped flower" .)