Boxing official (3)
I believe the answer is:
ref
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">boxing official</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ref that I've seen before include "A diminutive umpire in soccer or boxing" , "In brief, a soccer controller" , "Football official (colloq.)" , "Football's whistler" , "Sports official (abbrev.)" .)