A “referee” is a sports official who administers a game; the term is neither masculine nor feminine. Few referees in professional sports are women. “Referette” (a female referee) has been cited in print since at least 2007.
 
In 2012, the National Football League had a labor dispute with its a referees and a woman referee was hired. One blogger wrote, “What are we supposed to call her—a referette? A refershee?”
 
   
Merriam-Webster Dictionary
ref·er·ee noun \ˌre-fə-ˈrē\
Definition of REFEREE
(...)
2: a sports official usually having final authority in administering a game      
 
Racechat.co.nz  
Bluey
07-23-2007, 11:33 PM
Re: AB’s backline won’t win the World Cup
(...)
The only way the Boks can win is if the referees/referettes ignore foul play,especially at breakdown as that is where the Boks stall the rythym of attacking sides like the All Blacks.
   
El Campo De Petworth
THURSDAY, JULY 1, 2010
Crooks Steal Silver in Dupont
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The Crooks played exceptionally well that afternoon even though the referette could care less about the game behind her.
     
Bisonville
bri-dog
08-10-2012 03:30 AM
Re: Random thoughts
What are we supposed to call her—a referette? A refershee?
 
molineuxmix.co.uk
Pessimistic Wolf
19-02-2012, 12:01
Is a female referee a ‘referette’?
 
RushLimbaugh.com
National Manning League: Week One
September 10, 2012
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RUSH: Look. I was not making fun of the NFL referette, Shannon Easton.