Sumerian

adjective

1. of Sumer
2. of the people of Sumer, an ancient non-Semitic people of S Mesopotamia

noun

1. a member of this people
2. the language of the Sumerians, extinct as a spoken language since c. 2000 although it continued to be written until the abandonment of the cuneiform writing system: its tablets and inscriptions date back to 3000 : no clear relationship to any other language has been established