Where does “Hnidrā́H” come from?

Hnidrā́H (Proto-Indo-Aryan) comes from Proto-Indo-Iranian Hnidrā́H, from Proto-Indo-European h₁nidrm̥éh₂, from Proto-Indo-European h₁ni, from Proto-Indo-European h₁én — in.

Ancestry of “Hnidrā́H”, step by step

StepLanguageWordMeaning
1Proto-Indo-IranianHnidrā́Hsleep, slumber
2Proto-Indo-Europeanh₁nidrm̥éh₂
3Proto-Indo-Europeanh₁nidown
4Proto-Indo-Europeanh₁énin
Every word from Proto-Indo-European h₁énEvery word from Proto-Indo-European h₁niEvery word from Proto-Indo-European h₁nidrm̥éh₂