Candle component (4)
I believe the answer is:
wick
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">candle component</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 wick that I've seen before include "Highland town" , "Candle's thread" , "one adding fuel to flame" , "Candle cord - Scottish town" , "Caithness fishing town - part of candle" .)