Where does “knullen” come from?

knullen (Middle English) comes from Old English cnyllan, from Proto-West Germanic *knuʀlijan, from Proto-Germanic knuzlijaną, from Proto-Indo-European ǵen-.

Ancestry of “knullen”, step by step

StepLanguageWordMeaning
1Old Englishcnyllanto strike, knock, clap; to knell, ring a bell
2Proto-West Germanic*knuʀlijan
3Proto-Germanicknuzlijanąto butt; bump; knock; beat; to mash
4Proto-Indo-Europeanǵen-
Every word from Proto-Indo-European ǵen-Every word from Proto-Germanic knuzlijanąEvery word from Proto-West Germanic *knuʀlijan