Tropical climbing plant (5)
I believe the answer is:
liana
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tropical climbing plant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for liana that I've seen before include "Tropical vine" , "Jungle climber" , "Jungle creeper" , "Woody climbing tropical plant -- a nail (anag)" , "Woody forest climber" .)