Where does “nosi” come from?

nosi (Old Frisian) comes from Proto-Germanic nusō, from Proto-Germanic nasō, from Proto-Indo-European nasō, from Proto-Indo-European néh₂s- — nose, nostril.

Ancestry of “nosi”, step by step

StepLanguageWordMeaning
1Proto-Germanicnusōnose
2Proto-Germanicnasōnose
3Proto-Indo-Europeannasō—
4Proto-Indo-Europeannéh₂s-nose, nostril
Every word from Proto-Indo-European néh₂s- →Every word from Proto-Indo-European nasō →Every word from Proto-Germanic nasō →