Source : Webster's Revised Unabridged Dictionary (1913)

Jujube \Ju"jube\ (j[=u]"j[-u]b), n. [F., fr. L. zizyphum, Gr.
   zi`zyfon, Per. z[=i]zf[=u]n, zizaf[=u]n, zayzaf[=u]n.]
   The sweet and edible drupes (fruits) of several Mediterranean
   and African species of small trees, of the genus {Zizyphus},
   especially the {Z. jujuba}, {Z. vulgaris}, {Z. mucronata},
   and {Z. Lotus}. The last named is thought to have furnished
   the lotus of the ancient Libyan Lotophagi, or lotus eaters.

   {Jujube paste}, the dried or inspissated jelly of the jujube;
      also, a confection made of gum arabic sweetened.

Jujube \Ju"jube\, n.
   A lozenge made of or in imitation of, or flavored with, the
   jujube fruit.

Source : WordNet®

jujube
     n 1: spiny tree having dark red edible fruits [syn: {jujube bush},
           {Christ's-thorn}, {Jerusalem thorn}, {Ziziphus jujuba}]
     2: dark red plum-like fruit of Old World buckthorn trees [syn:
        {Chinese date}, {Chinese jujube}]
     3: chewy fruit-flavored jellied candy (sometimes medicated to
        soothe a sore throat)