1. native grape of northeastern United States; origin of many cultivated varieties e.g. Concord grapes • Syn: Vitis labrusca • Hypernyms: grape, grapevine, grape vine • Member Holonyms: Vitis, genus Vitis 2. purplish-black wild grape of the eastern United States with tough skins that slip easily from the flesh; cultivated in many varieties • Hypernyms: slipskin grape • Hyponyms: Concord grape, Catawba • Part Holonyms: Vitis labrusca