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dueño (Noun) (m. & f.) "owner;" (m.) "master;" (f.) "mistress," "lady"

11th cent. From Latin dominus 'id.' From Proto-Italic *domo-no- "(person) of the house." Derived from *domo- "house." From Proto-Indo-European *dōm 'id.,' a root noun.

Also the origin of the surnames Dueñas, Doña, Doñamayor, and Doñas.

Romance: Western Vulgar Latin: Portuguese dono, Catalan don, French dom, Italian don; Eastern Vulgar Latin: Romanian domn

Indo-European: Indo-Iranian: Sanskrit dámūnas- "lord of the house"