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btw

Definition

written abbreviation for by the way: used, for example in emails, when you are writing something that relates to the subject you are discussing, but is not the main point of the discussion: I hope you enjoyed your holiday in Paris - btw, can you recommend a good hotel?Conventions used on the Internet and in email
(Definition of btw from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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