In online chatrooms it means a man in his 40's or 50's with his nob out.
In yahoo chat TEEN room - male, 42... male, 54...male, 49
by spunky March 21, 2004
When used by online pornographers, a person between the ages of 18 and 25 (approximately)
Youngest teens on the web! (all models 18 or over)
by Linton July 12, 2003
someone between the ages of thirTEEN and nineTEEN (d'ohhhhhhhhhhhhhhhhhhh!)
"Twelve-year-olds are far too young for the teen scene, and don't trust anyone over 20"
by kofi May 19, 2003
Short for teen-ager, a "teen" is the term used to perpetuate the stereotype teen-ager who is rebelious, watches MTV, listens to pop, rap, country, rock, and/or punk rock, and looked down upon by the older and/or more mature community.
"Those stupid teens make us normal teen-agers look bad."
by this guy September 18, 2004
1/16 of cocaine, half an 8 ball.
"dude I'm kinda strapped right now and can't get a ball mind if I drop by and pick up a teen?"
by MrSteak63 August 21, 2007
To be thirTEEN through nineTEEN years old. It is possible to be both a teen and an adult. Teen does not mean only a person who is not an adult yet.

A teen is someone who is constantly getting discriminated against, like blacks used to.

Unfortunately, the majority of adults fail to see that. (See bias or ignorant.)
My teen is so rebellious and has a mind of his own, which scares me, the parent! I want my teen to be a robot, not an individual!
by Jacob Wake-up May 8, 2009