fox grape

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A wild grape (Vitis labrusca) of the eastern United States that bears purplish-black berries and is the source of many cultivated grape varieties.

from The Century Dictionary.

• noun The common name of several species of North American wild grapes, especially Vitis Labrusca of the northern and western and V. vulpina of the southern United States: so called from their musky or foxy perfume.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The native eastern North American grape, Vitis labrusca, with many cultivars, of which the Concord grape is the most important.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun native grape of northeastern United States; origin of many cultivated varieties e.g. Concord grapes
• noun purplish-black wild grape of the eastern United States with tough skins that slip easily from the flesh; cultivated in many varieties