gʷōws

The PIE word for cattle, *gʷōws, holds particular significance for cultural reconstruction because cattle represented wealth in early IE society. The equation of livestock with property is preserved in Latin pecūnia ("money") from pecus ("livestock") and in English fee (from Old English feoh, "cattle, property, money" — cognate with Latin pecus). Latin bōs (genitive bovis, "ox, cow") shows *gʷ- > b-, the regular Italic development of the labialised velar. Derivatives include bovine, beef (through Old French boef, from Latin bovem), butter (through Greek boútȳron, "cow-cheese"), and bugle (from Latin būculus, "young bull"). Greek boûs (βοῦς, "ox, cow") preserves the diphthong. Derivatives include hecatomb (hekatómbē, "sacrifice of a hundred oxen"), bucolic (boukolikós, "of herdsmen"), butyric (from boútȳron), and the name Bosporus ("ox-ford"). Sanskrit gáus ("cow, cattle") shows *gʷ- > g- (the regular treatment of labialised velars in Indo-Iranian, where the labialisation is lost). The compound go-pāla ("cow-protector," a herdsman) and the cultural centrality of the cow in Vedic and Hindu tradition reflect the inherited IE association of cattle with wealth and sacredness. In Germanic, *gʷ- > kw- (by Grimm's Law), yielding Proto-Germanic *kwōz: Old English cū (Modern English cow), Old Norse kýr, and the related Old English cū-hyrde ("cowherd"). The German Kuh continues the same line. Old Irish bó (genitive bóu) and Welsh buw show the Celtic reflex. Lithuanian guõvis preserves the Balto-Slavic form. Armenian kov continues the root with regular phonological development. The Proto-Celtic *bōs-roig- ("cattle raid") underlies the Irish Táin Bó Cúailnge, the central epic of early Irish literature — a narrative built around the theft of cattle. This literary tradition, in which cattle raids serve as the occasion for heroic narrative, has parallels in Greek (the cattle of Geryon, the cattle of Helios) and Indian (the Paṇi cattle-theft myth in the R̥gveda) traditions, all potentially traceable to a PIE narrative pattern.