Where does “ओठ” come from?

ओठ (Hindi) comes from Sauraseni Prakrit 𑀑𑀝𑁆𑀞, from Sanskrit ओष्ठ, from Proto-Indo-Aryan HáwHṣṭʰas, from Proto-Indo-Iranian HáwHštʰas, from Proto-Indo-European h₃éh₁os — mouth.

Ancestry of “ओठ”, step by step

StepLanguageWordMeaning
1Sauraseni Prakrit𑀑𑀝𑁆𑀞—
2Sanskritओष्ठlip; the forepart of an Agnikuṇḍa; Coccinia...
3Proto-Indo-AryanHáwHṣṭʰas—
4Proto-Indo-IranianHáwHštʰas—
5Proto-Indo-Europeanh₃éh₁osmouth
Every word from Proto-Indo-European h₃éh₁os →Every word from Proto-Indo-Iranian HáwHštʰas →Every word from Proto-Indo-Aryan HáwHṣṭʰas →