Definition: A word of warning yelled out by a player who has hit an errant shot. If your shot is in danger of hitting or landing very close to another player or group of players on the course (for instance, if you slice a ball into an adjoining fairway), you should yell "fore!" to warn players to watch out.
For more, see our FAQ entry, "Why do golfers yell "fore" to warn others of an errant shot?"
