Mastodon web UI allows witches and other kind of people to save regexes (some weird magic from people who talk to computers) in order to filter the home timeline. We, as very cool witches, should have a better term for this.
I suggest using “cast a repellent spell” instead of "filter out by regular expressions”, or, as the cheese-eaters (and hummus-eaters, but speaking french) say, “lancer un sort d’éloignement”