Green’s Dictionary of Slang

jubbie n.

also jubba
[? jubbies n.]

(W.I.) a friend, a girlfriend.

[US]C. McKay ‘Jubba’ Songs from Jamaica 10: My jubba waiting dere for me; Me knowin’, went out on de spree.
[WI]Francis-Jackson Official Dancehall Dict. 28: Jubbie (Ja.) a young friend, a girlfriend.