mib´zar (מבצר, mibhcaÌ„r, “a fortressâ€): An Edomite chief, the King James Version “duke†(; ). According to Eusebius, Mibzar is connected with Mibsara, a considerable village subject to Petra and still existing in his time. Compare Holzinger and Skinner in respective commentaries on Genesis.