זוּב zûwb (H2100)

to flow freely (as water), i.e. (specifically) to have a (sexual) flux; figuratively, to waste away; also to overflow

1) to flow, gush, issue, discharge 1a) (Qal) 1a1) to flow, gush 1a2) to die, pine away (fig.) 1a3) to flow (of issue from woman), have an issue, flux 1a4) flowing (participle)

a primitive root;