Where does “ਦੂਸਰਾ” come from?

ਦੂਸਰਾ (Punjabi) comes from Hindi दूसरा, from Sanskrit *द्विःसर, from Sanskrit सर, from Proto-Indo-European srew-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Ancestry of “ਦੂਸਰਾ”, step by step

StepLanguageWordMeaning
1Hindiदूसराother, another; second; copy, duplicate
2Sanskrit*द्विःसर—
3Sanskritसरstring, cord; flowing
4Proto-Indo-Europeansrew-to flow, stream
5Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together
Every word from Proto-Indo-European ser- →Every word from Proto-Indo-European srew- →Every word from Sanskrit सर →