What is the origin of bucchero?

Bucchero “an Etruscan black ceramic ware” is a borrowing from Italian, though its roots trace back much further. Prior to Italian, bucchero was adapted from Spanish búcaro and, earlier, Portuguese púcaro “clay vessel.” Before Portuguese, púcaro ultimately derives from Latin pōculum “goblet,” but between these two points, the word may have passed through Mozarabic, a variety of Romance once spoken in the south of Spain. Mozarabic was not a language but rather a continuum of dialects descended from Vulgar Latin that developed in the regions of Spain under Moorish control and that Arabic heavily influenced. In this way, Mozarabic was for centuries an intermediary that allowed for numerous terms of Arabic and Latin origin to enter (or, in the case of Latin, to reenter) the Spanish language. Bucchero was first recorded in the late 1880s.