The term USE TWITTER can be broken down into two crossword solutions: TWEET (5 letters) and USE (4 letters). TWEET is a verb that means to post a message on the social media platform Twitter. Twitter is a popular microblogging platform that allows users to post short messages, known as tweets, which can be seen by other users. USE is a verb that means to employ something for a particular purpose. In this case, it refers to using Twitter to post messages.