Where does “वसः” come from?

वसः (Newari) comes from Sanskrit वस्त्र, from Indo-Iranian *wástram, from Proto-Indo-European wés-tro-m, from Proto-Indo-European wes- — to dress, clothe.

Ancestry of “वसः”, step by step

StepLanguageWordMeaning
1Sanskritवस्त्रclothes, garment, dress; cloth; cover
2Indo-Iranian*wástram—
3Proto-Indo-Europeanwés-tro-m—
4Proto-Indo-Europeanwes-to dress, clothe
Every word from Proto-Indo-European wes- →Every word from Proto-Indo-European wés-tro-m →Every word from Indo-Iranian *wástram →