Probably plural from boten; hollows: Betonim, a place in Palestine -- Betonim.
see HEBREW boten
H993. Betonim
בְּטֹנִים proper name, of a location city of Gad, east of Jordan Joshua 13:26, modern Ba‰ne, west of Es-Sal‰ (see d. VeldeMemoir 298) = Βοτνία compare LagOnom. 294, 2nd ed. 247.