Where does “[[áss]], [[ǫ́ss]]” come from?

[[áss]], [[ǫ́ss]] (Old Norse) comes from Proto-Germanic ansuz, from Old High German helm, from Proto-West Germanic helm, from Proto-Germanic helmaz, from Proto-Germanic halmaz, from Proto-Indo-European ḱolh₂mos, from Proto-Indo-European ḱelh₂- — to pierce, strike; to stick; prick; stab.

Ancestry of “[[áss]], [[ǫ́ss]]”, step by step

StepLanguageWordMeaning
1Proto-Germanicansuzdeity, god; name of the A-rune
2Old High Germanhelmhelmet
3Proto-West Germanichelmhelmet
4Proto-Germanichelmazhelmet
5Proto-Germanichalmazhalm; stem; stalk; straw; hay
6Proto-Indo-Europeanḱolh₂mosstalk
7Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab
Every word from Proto-Indo-European ḱelh₂-Every word from Proto-Indo-European ḱolh₂mosEvery word from Proto-Germanic halmaz