Bogey (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bogey</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 hobgoblin that I've seen before include "Mischievous imp" , "Mischievous 17 across" , "Mythical mischief-maker" , "frightful spirit" , "Evil fairy" .)