Where does “Aurajoki” come from?

Aurajoki (Finnish) comes from Finnish Aura, from Finnish Aurora, from Latin aurōra, from Proto-Italic auzōs, from Proto-Indo-European h₂éwsōs, from Proto-Indo-European h₂éws-os-s, from Proto-Indo-European h₂ews- — dawn; east; to draw water, scoop up.

Ancestry of “Aurajoki”, step by step

Aurajoki traces back through two separate lines of ancestry.

via Finnish Aura

StepLanguageWordMeaning
1FinnishAuraplough, plow agricultural tool
2FinnishAuroraAurora
3Latinaurōra
4Proto-Italicauzōsdawn
5Proto-Indo-Europeanh₂éwsōsdawn; goddess of dawn, bringer of light for which...
6Proto-Indo-Europeanh₂éws-os-s
7Proto-Indo-Europeanh₂ews-dawn; east; to draw water, scoop up

via Finnish joki

StepLanguageWordMeaning
1Finnishjokiriver
2Finnishsokeusblindness
3Finnishsokeablind
4Proto-Finnicsokedablind
Every word from Proto-Indo-European h₂ews-