Ref
Part of speech: abbreviation
Definition: reference refectory
Part of speech: noun
Definition: Short form of referee.
Referee
Part of speech: verb
Definition: To act as a referee.
Part of speech: noun
Definition: An umpire or judge; the official who makes sure the rules are followed during a gameA person who settles a disputeA person who writes a letter of reference for someoneAn expert who judges the manuscript of an article or book to decide if it should be published
Example sentence: There's nothing better than a good, blind referee.