deriv►ʔanbaʕa, vb. IV, to cause to gush forth or flow out: *Š‑stem, caus. ►nabʕ, n., 1 ↗nabʕ; 2 spring, source: may be the etymon proper from which vb. I then would be denom.
►BP#3856manbaʕ, pl. manābiʕᵘ, n., 1a spring, well; 1b fountainhead, springhead, source, origin: considered an original item by Bergsträsser, but rather a simple maFʕaL formation for n.loc. | manbaʕ zayt, manbaʕ bitrōl, n., oil‑well
►yanbūʕ, pl. yanābīʕᵘ, n., spring, source, well.For another item from the same root √NBʕ (related to nabaʕa?), cf. ↗nabʕ.