köken: Uncertain. Proposals have been made connecting it with Proto-Indo-European *wegʷ- (“wet; moist”) (and thus Ancient Greek ὑγρός (hugrós) and Latin ūvidus), or with the Proto-Indo-European root behind Ancient Greek ἀδήν (adḗn) and Latin inguen.
köken: From Old Galician-Portuguese balorento (13ᵗʰ century, Cantigas de Santa Maria; attested as nickname, Balurentus, in a 12ᵗʰ Latin local document). From balor (“mould”) + -ento. Cognate with Portuguese bolorento.