The name Vasco, currently used as a Portuguese male name, derives from the medieval Iberian name Velasco, which probably has its origins in the Basque country (in Spanish: País Vasco).
(adj.) = Basque. Ex: It is at present functioning in twelve languages (Welsh, Irish, Breton, Basque, English, French and Spanish, Scots Gaelic, Italian, Slovene, Frisian and Dutch).