Real Dictionary

grape
countable noun: Grapes are small green or dark purple fruit which grow in bunches. Grapes can be eaten raw, used for making wine, or dried.

grape in American English
any of various small, round, smooth-skinned, juicy berries, generally purple, red, or green, growing in clusters on woody vines: grapes are eaten raw, used to make wine, or dried to make raisins
designating a family (Vitaceae, order Rhamnales) of dicotyledonous, tendril-bearing, climbing, woody vines, including the Virginia creeper
noun: the edible, pulpy, smooth-skinned berry or fruit that grows in clusters on vines of the genus Vitis, and from which wine is made

grape in British English
noun: the fruit of the grapevine, which has a purple or green skin and sweet flesh: eaten raw, dried to make raisins, currants, or sultanas, or used for making wine

grape in Hospitality
noun: Grapes are small green or purple fruit which grow in bunches. Grapes can be eaten raw, used for making wine, or dried.