Mib'zar (Heb. Mibtsar', מַבצָר, fortress, as often; Sept. in Chronicles Μαβσάρ v.r. Βαβσάρ, in Genesis Μαζάρ). The ninth named of the petty Edomitish chieftains descended from Esau contemporary with the Horite kings (Ge 36:42; 1Ch 1:53). B.C. long post 1905. "These phylarchs are said to be enumerated 'according to their settlements in the land of their possession;' and Knobel (Genesis), understanding Mibzar as the name of a place, has attempted to identify it with the rocky fastness of Petra,' the strong city' (עַיר מַבצָר, 'ir mibstar, Ps 108:11; comp. Ps 60:11). ' the cliff,' the chasms of which were the chief stronghold of the Edomites (Jer 49:16; Ob 1:3)." SEE EDOM.