Based on the central character in the Eminem song of the same name, a "stan" is an overzealous maniacal fan for any celebrity or athlete.

an overobsessed fan to the point of following a star around.

It is formed from the words stalker and fan.

Stalker + fan = stan.

A song by Eminem off of The Marshall Mathers LP about a man who loves Eminem and his music to the point of insanity. The fan, whose name is Stan, meets Eminem at a show and then begins to write him letters. The letters get progresivly stranger. After a long time with no responce from Eminem, Stan puts his girlfriend in the trunk of his car and drives to a bridge. Stan tells Eminem all about what and why he is doing this from a tape recorder in his car. Stan then drives the car over the bridge, presumably killing himself and his girlfriend who was pregnant with his kid. The song ends with Eminem writing a letter to Stan right after his death. But Eminem then realizes that the man he has heard about on the news who drove his car over a bridge is the guy who has been writing him letters. In other words if Eminem had wrote the letter a week earlier Stan would have remained alive. Famous because it used the baseline and vocals from Dido's famous song "Thank You". Very powerful song.

A character from SouthPark. He is usually the rational one. Whenever Kenny dies (which is every episode), he says:

Stan: Oh my god, they killed Kenny!
Kyle: You Bastards!!

As in Basball's Hall of Fame 'Stan Musial'. Stan Musial played for the St. Louis Cardnials starting in 1941. He was recorded batting in all of 10,972 times, played in 3,026 pro-leauge games, recorded 1,949 runs, and 1,951 RBI's or runs batted in. Stan Musial won seven National Bating Leauge titles and was named the Sporting News Major Leauge Player in 1946 and in 1951

In 1963 when Musial retired, Stan held 17 Major Leauge, 29 National and 9 All-Star leauge records.

Stan Musial was inducted to the 'Baseball Hall of Fame' in 1969.

Stan as many people know is a character in Eminem's popular song Stan. Because the character was so obsessive the name can be used as an adjective. You could call somebody a "stan" if you think they are obsessive of someone or something. One good exampe would be in the song Ether by Nas.

The name of "MC Hammer" or Stan Burrell was born on March 30, 1962. He is a phonemic icon in 'pop-culture'. Stan is a multi-platinum selling rapper, entertainer, dancer, and was star of his own reality television show, 'Hammer Time' in the late 90's.