- Sumer - 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
--1 is a kind of geographical area, geographic area, geographical region, geographic region
--1 is a part of
--1 has part: UrBabylonia, Chaldaea, Chaldea; Iraq, Republic of Iraq, Al-Iraq, Irak