Here are a bunch of Urban Dictionary definitions from various points in Twitter's history. Twitter has changed a lot in recent years — focusing more on conversations and the like lately — so keep that in mind as most of the top results on Urban Dictionary come from around 2009. A few from other times are thrown in for fun, and some of the top results were even a little too profane to include.
Hat tip tip to Quartz for collecting Twitter's descriptions from paper of record.
So, while we're waiting for Twitter to drop its S-1 filing...
