Where does “blatzen” come from?

blatzen (Middle High German) comes from Old High German blazzen, from Proto-Germanic platjaną, from Proto-Indo-European *blod-.

Ancestry of “blatzen”, step by step

StepLanguageWordMeaning
1Old High Germanblazzen—
2Proto-Germanicplatjanąto strike, beat
3Proto-Indo-European*blod-—
Every word from Proto-Indo-European *blod- →Every word from Proto-Germanic platjaną →Every word from Old High German blazzen →