Nape of the neck (6)
I believe the answer is:
scruff
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nape of the neck</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 scruff that I've seen before include "Back of a cat's neck" , "Part of neck" , "One hardly washing" , "Untidy chap" , "bit of neck?" .)