Where does “kalo” come from?

kalo (Old High German) comes from Proto-Germanic *kalu, from Proto-Germanic kalwaz, from Proto-Indo-European gelH- — naked; head.

Ancestry of “kalo”, step by step

StepLanguageWordMeaning
1Proto-Germanic*kalu—
2Proto-Germanickalwazbald
3Proto-Indo-EuropeangelH-naked; head
Every word from Proto-Indo-European gelH- →Every word from Proto-Germanic kalwaz →Every word from Proto-Germanic *kalu →