вѣтръ • (větrŭ) m
From Proto-Slavic *větrъ, from Proto-Indo-European *h₂weh₁-. Common Balto-Slavic, Lithuanian vėtra (“storm”), Old Prussian wetro (“wind”), Latvian vētra (“storm”).
Indo-European cognates include Latin ventus (“wind”), Sanskrit वाति (vāti, “to blow”), Ancient Greek ἄημι (áēmi, “I blow”).