Lit. “A side, or shore.” A country frequently mentioned in the Traditions, which extends from ‘Abbadan to al-Mausil in length, and from al-Qadisiyah to Halwan in breadth. Said to be so named because it was on the “shore” of the rivers Tigris and Euphrates. Its principal cities were al-Basrah and al-Kufah, and were called al-‘Iraqan, or the Two ‘Iraqs.
Based on Hughes, Dictionary of Islam