shatt-al-arab

noun

1. a river in SE Iraq, formed by the junction of the Tigris and Euphrates rivers, flowing SE to the Persian Gulf. 123 miles (198 km) long.

noun

1. a river in SE Iraq, formed by the confluence of the Tigris and Euphrates Rivers: flows southeast as part of the border between Iraq and Iran to the Persian Gulf. Length: 193 km (120 miles)