Candle part (4)
I believe the answer is:
wick
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">candle part</span>' is the definition.<br/ ><span class="explanation-format__explanation">('wick' is part of 'candle')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wick that I've seen before include "Length of thread in centre of candle" , "Caithness seaport" , "that burns down?" , "light fibre" , "Caithness fishing town - part of candle" .)