Plait of hair (5)
I believe the answer is:
tress
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">plait of hair</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 tress that I've seen before include "is a bit of a shock" , "Long lock or plait of hair" , "Rests (anag.)" , "Bit of hair" , "Obsolete support" .)