Long-haired dog (6)
I believe the answer is:
setter
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">long-haired dog</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 setter that I've seen before include "Crossword creator" , "Silky-coated gun dog" , "Dog found in street" , "Bird trained to scent game" , "Puzzle creator" .)