Where does “шлем” come from?

шлем (Bulgarian) comes from Proto-Slavic šelmъ, 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.

шлем (Bulgarian): helmet protective headpiece

Definitions

  1. helmet protective headpiece

Ancestry of “шлем”, step by step

StepLanguageWordMeaning
1Proto-Slavicšelmъhelmet
2Proto-Germanichelmazhelmet
3Proto-Germanichalmazhalm; stem; stalk; straw; hay
4Proto-Indo-Europeanḱolh₂mosstalk
5Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab
Every word from Proto-Indo-European ḱelh₂- →Every word from Proto-Indo-European ḱolh₂mos →Every word from Proto-Germanic halmaz →