Where does “phūchen” come from?

phūchen (Middle High German) comes from Old High German pfūhhan, from Proto-Germanic pukaną, from Proto-Indo-European bew- — "low-pitch humming noise".

Ancestry of “phūchen”, step by step

StepLanguageWordMeaning
1Old High Germanpfūhhanto spit, puff
2Proto-Germanicpukanąto spit, puff; to pick, peck, prick, knock
3Proto-Indo-Europeanbew-"low-pitch humming noise"
Every word from Proto-Indo-European bew- →Every word from Proto-Germanic pukaną →Every word from Old High German pfūhhan →