Coiled length of yarn (5)
I believe the answer is:
skein
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">coiled length of yarn</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for skein that I've seen before include "Piece of loose-coiled yarn" , "Loosely coiled length of thread" , "Coiled length of yarn" , "Hank" , "Loose coil of yarn" .)