Blowy comes from blow + -y; blow descends from Old English blāwan ('to blow'), from Proto-Germanic *blēaną, from Proto-Indo-European *bhleh- ('to blow'). The historical trail runs through blāwan in Old English and *bʰleh₁- in Proto-Indo-European. Morphologically, blowy is transparent: it draws on blow + -y. Used as an adjective, blowy now means "characterized by strong wind; windy or gusty", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in derived forms such as blowiness and related forms such as blow. The modern word remains analyzable through its parts, which makes the semantic connection unusually direct.