an obs. variant of JUJUBE.

1

1598.  Florio, Giubebba, a drug called iubebes [1611 Iubebs].

2

1658.  Phillips, Jubeb, fruit … a kind of Pruan, used much in Physick.

3

1727.  Bradley, Fam. Dict., s.v. Gourd, To steep it … in the Juice of Jubebs.

4

1736.  Bailey, Houshold Dict., 334. Take syrup of Althea and Jubebs.

5