Dictionary compiler (13)
I believe the answer is:
lexicographer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dictionary compiler</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 lexicographer that I've seen before include "Dictionary maker" , "Dictionary compiler" , "Partridge, say" .)