Cotton thread (5)
I believe the answer is:
lisle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cotton thread</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 lisle that I've seen before include "Type of cotton yarn" , "Strong twisted cotton thread for the strange Ellis" , "Strong cotton material" , "Twisted yarn" , "Cotton stocking thread" .)