Etymology

From Proto-Balto-Slavic *wētras, *wētrā, from Proto-Indo-European *h₂weh₁-. Cognate with Proto-Slavic *větrъ (Old Church Slavonic вѣтръ ‎(větrŭ, “wind”)), Lithuanian vėtra ‎(“storm”), Latvian vētra ‎(“storm”).