Rainforest vine (5)
I believe the answer is:
liana
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rainforest vine</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 liana that I've seen before include "Woody forest climber" , "Jungle creeper" , "Climbing jungle plant" , "Climbing plant of rainforests" , "Climbing-plant" .)