Emily Dickinson Lexicon

JU'JUB, or JU'JUBE, n. [L. zizyphum; Pers. زِيزَفُرنْ zizafon.]

The name of a plant and of its fruit, which is pulpy and resembles a small plum. The plant is Zizyphus jujuba, a native of the East Indies. The fruit was formerly used in pectoral decoctions, but it is now in little reputation. – Encyc. Miller.