A noun meaning: Someone who uses Twitter. Use: “I want to become a famous twitterer.” Because Twitter was populated mostly by techie early adopters in the beginning, it has developed a rich set of slang that includes just about everything Twitter-related, including a term for people who use the social media tool. Over time, “twitterer” has become the preferred term among Twitter users, probably because it’s easy to remember and easy to figure out what it means. The term should not be “tweet,” “tweeter,” “twit,” or anything like that. Using one of these terms to describe a person could make you look like an amateur, or if you call them a “twit,” it might get you in trouble.