tigris

noun

1. a river in SW Asia, flowing SE from SE Turkey through Iraq, joining the Euphrates to form the Shatt-al-Arab. 1150 miles (1850 km) long.

noun

1. a river in SW Asia, rising in E Turkey and flowing southeast through Baghdad to the Euphrates in SE Iraq, forming the delta of the Shatt-al-Arab, which flows into the Persian Gulf: part of a canal and irrigation system as early as 2400 bc, with many ancient cities (including Nineveh) on its banks. Length: 1900 km (1180 miles)