jujube

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

• noun A thorny deciduous small tree or shrub (Ziziphus jujuba) native to Asia, widely cultivated for its edible fruit.
• noun The small sweet greenish to red fruit of this tree.
• noun Any of various other trees or shrubs of the genus Ziziphus bearing edible fruit.
• noun A fruit-flavored candy or lozenge.

from The Century Dictionary.

• noun The name of several species of plants of the genus Zizyphus.
• noun The edible fruit of these plants.
• noun A confection made of gum arabic or gelatin, sweetened and flavored so as to resemble the jujube-fruit. Also called jujube paste, a name originally applied to a jelly made from the jujube.

from the GNU version of the Collaborative International Dictionary of English.

• noun The sweet and edible drupes (fruits) of several Mediterranean and African species of small trees, of the genus Zizyphus, especially the Zizyphus jujuba, Zizyphus vulgaris, Zizyphus mucronata, and Zizyphus Lotus. The last named is thought to have furnished the lotus of the ancient Libyan Lotophagi, or lotus eaters.
• noun A chewy gelatinous lozenge made of or in imitation of, or flavored with, the jujube fruit.
• noun the dried or inspissated jelly of the jujube; also, a confection made of gum arabic sweetened.

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

• noun The sweet and edible drupes (fruits) of several Mediterranean and African species of small trees.
• noun a fruit-bearing tree, Ziziphus zizyphus
• noun The fruit of this tree, also known as Chinese date and fructus jujubae
• noun North America A type of candy; specific type varies by country.

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

• noun chewy fruit-flavored jellied candy (sometimes medicated to soothe a sore throat)
• noun spiny tree having dark red edible fruits
• noun dark red plumlike fruit of Old World buckthorn trees