Lewis Short
Edom (noun M) :
* Esau, elder son of the patriarch Isaac: Esau, ipse est Edom,Vulg. Gen. 36, 1 al.; Isid. Orig. 7, 6, 33.
* A nation descended from Esau, Vulg. Num. 20, 14; id. 4 Reg. 3, 26 et saep.
* Transf., the country of the Edomites, Vulg. Num. 21, 4 et saep.
Charlton T. Lewis, Charles Short, A Latin Dictionary