köken: Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Italian s- substrate? Proto-Celtic *birros Gaulish *birrosbor. Latin birrus Italian birro Italian sbirrobor. Spanish esbirro Borrowed from Italian sbirro.
köken: Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Italian s- substrate? Proto-Celtic *birros Gaulish *birrosbor. Latin birrus Italian birro Italian sbirrobor. Catalan esbirro Borrowed from Italian sbirro.
köken: From Old Norse bófi (“boy”), from Proto-Germanic *bōbô, from *bō- (“close [male] relation”). Cognate with Dutch boef (“mischievous boy, rascal; also thief”), Middle Low German bôve, German Bube (“boy, rascal, knave, rogue”), dialectal Swedish babbe (“little boy”) and English bub.