ProseccoPronunciation: /prə(ʊ)ˈsɛkəʊ/Definition of Prosecco noun [mass noun] ( trademark in the UK) a sparkling white wine from the Veneto region of NE Italy. Origin:Italian, probably from Prosecco, a town near TriesteProsecco in other Oxford dictionaries Definition of Prosecco in the US English dictionary