köken: Inherited from Middle French écume, escume, from Old French escume (“froth, foam”), from Frankish *skūm (“froth, foam”), possibly via Vulgar Latin *scūma (compare Medieval Latin scuma), from Proto-Germanic *skūmaz (“foam”). Compare the rare Old French espume (“foam”), from Latin spūma (“foam, froth, slime”), which some sources hypothesise may have merged with or influenced the Germanic term,…
köken: From Middle Ukrainian бити (byty), from Old East Slavic бити (biti), from Proto-Slavic *biti, from Proto-Balto-Slavic *bī́ˀtei, from Proto-Indo-European *bʰeyh₂-.