Where does “соломъка” come from?

соломъка (Ukrainian) comes from Russian соло́ма, from Proto-Slavic solma, from Proto-Indo-European ḱolh₂mos, from Proto-Indo-European ḱelh₂- — to pierce, strike; to stick; prick; stab.

Ancestry of “соломъка”, step by step

StepLanguageWordMeaning
1Russianсоло́маstraw
2Proto-Slavicsolmastraw
3Proto-Indo-Europeanḱolh₂mosstalk
4Proto-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-Slavic solma →