Plant; instrument (5)
I believe the answer is:
viola
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">plant</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(viola is a kind of plant)</span><br/ ><br/ >'<span class="explanation-format__original">instrument</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(viola is a kind of instrument)</span><br/ ><br/ ></span>
(Other definitions for viola that I've seen before include "whose player takes a bow" , "that provides music" , "Sebastian's twin (Twelfth Night)" , "Shakespearean role" , "Instrument slightly larger than violin and of lower pitch" .)