Someone's fingers touch your tongue and fasten it together. You can't talk. All you can do is make sad tongue-less sounds as you try to figure out who would fasten your tongue like this.
Only one creature could use its fingers to fasten your tongue like this: cats (かつ). Cats are notorious for fastening tongues so that people can't speak. Haven't you ever heard the phrase, "Cat got your tongue?"
Currently there are no similar looking kanji which exist in the WaniKani learning system