Where does “جب” come from?

جب (Andalusian Arabic) comes from Arabic جُبّ — cistern, well; pit, fosse; cistern, well, pit;...

Ancestry of “جب”, step by step

Step	Language	Word	Meaning
1	Arabic	جُبّ	cistern, well; pit, fosse; cistern, well, pit;...

جب — Etymology, Origin & Word History | Etymology Explorer