Where does “sopraosso” come from?

sopraosso (Italian) comes from Italian osso, from Latin ossum, from Latin ōs, from Proto-Italic ōs, from Proto-Indo-European h₃ésth₁ — bone.

Ancestry of “sopraosso”, step by step

StepLanguageWordMeaning
1Italianossobone; stone, pit
2Latinossumbone; kernel, stone
3Latinōsmouth
4Proto-Italicōsmouth
5Proto-Indo-Europeanh₃ésth₁bone
Every word from Proto-Indo-European h₃ésth₁