(Heb. Mibtsar', מַבְצָר , 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 (Genesis 36:42; 1 Chronicles 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 מַבְצָר, ‘ ir mibstar, Psalms 108:11; comp. Psalms 60:11). ‘ the cliff,' the chasms of which were the chief stronghold of the Edomites (Jeremiah 49:16; Obadiah 1:3)." (See EDOM).