'Jujube' definitions:

Definition of 'jujube'

noun

Spiny tree having dark red edible fruits [syn: jujube, jujube bush, Christ's-thorn, Jerusalem thorn, Ziziphus jujuba]

noun

Dark red plumlike fruit of Old World buckthorn trees [syn: jujube, Chinese date, Chinese jujube]

noun

Chewy fruit-flavored jellied candy (sometimes medicated to soothe a sore throat)

From: GCIDE

Jujube \Ju"jube\ (j[=u]"j[-u]b), n. [F., fr. L. zizyphum, Gr. zi`zyfon, Per. z[imac]zf[=u]n, zizaf[=u]n, zayzaf[=u]n.]
1. 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. [1913 Webster]
2. A chewy gelatinous lozenge made of or in imitation of, or flavored with, the jujube fruit. [Webster 1913 Suppl.]
Jujube paste, the dried or inspissated jelly of the jujube; also, a confection made of gum arabic sweetened. [1913 Webster] Jiujutsu Jujitsu Jujutsu

From: GCIDE

Christ's-thorn \Christ's-thorn`\, n. (Bot.) One of several prickly or thorny shrubs found in Palestine, especially the Paliurus aculeatus, {Zizyphus Spina-Christi}, and Zizyphus vulgaris. The last bears the fruit called jujube, and may be considered to have been the most readily obtainable for the Crown of Thorns. [1913 Webster]