Citations:chain block

Noun: "(Internet) a browser plug-in or list that enables Twitter users to pre-emptively block a group of accounts"

 * 2019, Yena Lee, "Feminist Fans and Their Connective Action on Twitter K-Pop Fandom", Berkeley Undergraduate Journal, Volume 33, Issue 1 (2019), page 40:
 * One of the most extreme ways in which containment worked within K-pop fandom was making a block list or chain block of fans categorized as the anti-fans.