Definition: Definitions from the Official Rules of Golf appear
courtesy of the USGA.
Referee: A "referee" is one who is appointed by the Committee to decide questions of fact and apply the Rules. He must act on any breach of a Rule that he observes or is reported to him.
A referee should not attend the flagstick, stand at or mark the position of the hole, or lift the ball or mark its position.
Exception in match play: Unless a referee is assigned to accompany the players throughout a match, he has no authority to intervene in a match other than in relation to Rule 1-3, 6-7 or 33-7.
©USGA, used with permission
