the GNU version of the Collaborative International Dictionary of English
n. A grape, or a bunch of grapes.
n. A grape dried in the sun or by artificial heat.
The Century Dictionary and Cyclopedia
n. A cluster of grapes; also, a grape.
n. A dried grape of the common Old World species, Vitis vinifera.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. dried grape
Word Usage
"Apparently a raisin is a dried grape (knew that) while a sultana is a seedless raisin (didn't know that - presumably they mean dried seedless grape and not a raisin they've gone to the trouble of taking the seed from) and a currant is a dried seedless grape of a specific variety."