BTW definition: 1. written abbreviation for by the way: used, for example in emails, when you are writing something…. Learn more. This is an all-seated, open-air stadium event where distance and views vary. Seated sections are open to ages 6 and above. All minors under 16 must be accompanied by a ticket-bearing legal guardian aged 18 or above. Maximum 4 tickets per transaction. Learn what BTW means, how to use it in texts, social posts, email, and casual chats, plus tone, examples, capitalization, and formal alternatives BTW, which stands for “By The Way,” is a popular abbreviation in textspeak. It is used online, in SMS text and even in speech. Discover the different meanings and uses of BTW. BTW (also written btw) is an initialism, so each letter is pronounced individually if you say it out loud. What Does “Btw” Mean? Btw is a common, informal abbreviation used in digital texts, chats, and social media conversations to introduce a new thought or piece of information. Discover what does BTW mean in slang, its origin, how to use it in texts, plus the funniest online moments with BTW. Master this essential texting acronym! What does the abbreviation BTW stand for? Meaning: by the way.