1. an area in the southern region of Babylonia in present-day Iraq; site of the Sumerian civilization of city-states that flowered during the third millennium BC;
WordNet (r) 3.0 (2006):
Sumer
n 1: an area in the southern region of Babylonia in present-day
Iraq; site of the Sumerian civilization of city-states that
flowered during the third millennium BC