Twitter thread; series of tweets
Internet slang abbreviation of 連続ツイート. Used on Twitter to refer to a thread of connected tweets.
I'll make a thread about this topic.
It took time to read his series of tweets.
Abbreviation of 連続ツイート (renzoku tsuīto, 'successive tweets'), formed by combining 連 (ren, 'in succession') and ツイ (tsui, from 'tweet').