An organized or impromptu gathering of people that use Twitter. (A meet up of people that 'tweet' using Twitter.)
by @stephenpc November 9, 2008
A gathering of nerds attempting social contact, likely for the first time. Usually disintegrates into everyone running to the nearest computer to type to one another.
Tommy: Hey Jethro, quit playing WoW its time to meet some folks at the tweetup!
Jethro: Oh yeah I forgot about that, I can't wait to meet BigBootay421 at the tweetup, but first I need to slay this orc!
Jethro: Oh yeah I forgot about that, I can't wait to meet BigBootay421 at the tweetup, but first I need to slay this orc!
by SteveBonus August 5, 2009
Taking social media one step further and meeting the people from twitter, as a group, that you socialize with on a daily basis.
him: Did you hear about that tweetup in Canada?
her: You mean #tweetONeh? I was there! It was the best tweetup ever!
her: You mean #tweetONeh? I was there! It was the best tweetup ever!
by tweetup attendee June 24, 2013
A group of friends on Twitter (social network) that are planning to meet up. A request by a user to meet with friends via Twitter.
by Blaede January 20, 2009