Nebbiolo Syllabification: (Neb·bi·o·lo)Pronunciation: /ˌnebēˈōlō/Definition of Nebbiolo noun a variety of black wine grape grown in Piedmont in northern Italy. a red wine made from this. Origin:Italian, from nebbia 'mist' (because the grape ripens in the autumn)Nebbiolo in other Oxford dictionaries Definition of Nebbiolo in the British & World English dictionary