NFL official (3)
I believe the answer is:
ref
'nfl official' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ref that I've seen before include "Sports official (abbrev.)" , "In brief, a soccer controller" , "A diminutive umpire in soccer or boxing" , "One traditionally in black" , "Sports umpire" .)