Top Definition
Typically an all day Glee marathon in which gleeks watch episodes in bulk with few breaks.
Sara: "Hey Sarah! Want to go to the beach with me?"
Sarah: "Not now. Gleeathon. Can't stop. Must watch Glee."
by SarahLove92 June 23, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×