Where does “подмышка” come from?
подмышка (Russian) comes from Russian мы́шка, from Russian мышь, from Old East Slavic мꙑшь, from Proto-Slavic myšь, from Proto-Balto-Slavic *mū́ˀšis, from Proto-Indo-Iranian múHs, from Proto-Indo-European múh₂s — mouse.
подмышка (Russian): armpit, underarm
Ancestry of “подмышка”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Russian | мы́шка | "mouse", meaning "muscle" |
| 2 | Russian | мышь | mouse |
| 3 | Old East Slavic | мꙑшь | — |
| 4 | Proto-Slavic | myšь | mouse |
| 5 | Proto-Balto-Slavic | *mū́ˀšis | — |
| 6 | Proto-Indo-Iranian | múHs | mouse |
| 7 | Proto-Indo-European | múh₂s | mouse |