n. & v.
n. 1 an umpire esp. in football or boxing. 2 a person whose opinion or judgement is sought in some connection, or who is referred to for a decision in a dispute etc. 3 a person willing to testify to the character of an applicant for employment etc.
v. (referees, refereed) 1 intr. act as referee. 2 tr. be the referee of (a game etc.).