Narrows (6)
I believe the answer is:
tapers
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">narrows</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 tapers that I've seen before include "Makes or becomes gradually narrower" , "Narrows toward a point" , "Long thin candles" , "Narrows towards the end, like a candle" , "Diminishes gradually" .)