Namtar

from WordNet (r) 3.0 (2006)

Namtar
    n 1: a demon personifying death; messenger of the underworld
         goddess Ereshkigal bringing death to mankind [syn:
         {Namtar}, {Namtaru}]

from The Collaborative International Dictionary of English v.0.48

Namtar \Namtar\, Namtaru \Namtaru\prop. n. (Sumerian and
   Akkadian mythology)
   A demon personifying death; messenger of the underworld
   goddess Ereshkigal bringing death to mankind.

   Syn: Namtaru.
        [WordNet 1.5]