Cloth measure (3)
I believe the answer is:
ell
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cloth measure</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 ell that I've seen before include "Former measure of length" , "approximately 45 inches" , "Old 45-inch measure" , "Tailor's measure" , "Length of cloth" .)