C2[C]The thread of a book, discussion, speech, etc. is its story or the way that it develops, one part connecting with another: One of the main threads of the film is the development of the relationship between the boy and his uncle.Unfortunately my attention wandered for a moment and I lost the thread of (= forgot) what I was saying.Accounts and storiesSummaries and summarisingC2[C]a connected group of pieces of writing on the internet, where people are talking about a particular subject: I was so pleased to find this thread, and to know that lots of people have the same problem as me!Internet terminology and abbreviationsAccounts and storiesSummaries and summarising