köken: Inherited from Proto-Slavic *slina, from Proto-Indo-European *h₂leyH- (“to smear”). Cognates include Old Church Slavonic слина (slina), Bulgarian слю́на (sljúna), Czech slina, Polish ślina.
köken: From the hypothesized Vulgar Latin *baba, ultimately imitative of children speech on the pattern of the repeated syllable ba. Compare French bave.
köken: From Byzantine Greek σάλιον (sálion), from an unattested *σιάλιον (*siálion, “saliva”) with elision of -ιά- (-iá-) > -ά- (-á-), itself a diminutive formation from Ancient Greek σίαλον (síalon, “spittle, saliva”), perhaps with some phonetic conflation from σίαλος (síalos, “fat pig; grease”).