Where does “orarius” come from?

orarius (Latin) comes from Latin ōra, from Latin ōs, from Proto-Italic ōs, from Proto-Indo-European h₃ésth₁ — bone.

Ancestry of “orarius”, step by step

StepLanguageWordMeaning
1Latinōraborder, rim, frontier, limit, edge
2Latinōsmouth
3Proto-Italicōsmouth
4Proto-Indo-Europeanh₃ésth₁bone

Words derived from “orarius

Every word from Proto-Indo-European h₃ésth₁Every word from Proto-Italic ōsEvery word from Latin ōs