Aram-Naharaim (Hebrew: אֲרַם נַהֲרַיִם ʾĂram Nahărayim) is the biblical term for an ancient land along the great bend of the Euphrates River.
It is mentioned five times in the Hebrew Bible or Old Testament. In Genesis, it is used somewhat interchangeably with the names Paddan Aram and Haran to denote the place where Abraham stayed briefly with his father Terah's family after leaving Ur of the Chaldees, while en route to Canaan (Gen. 11:31), and the place from which later patriarchs obtained wives, rather than marry daughters of Canaan.
General info from Wikipedia.org