Valkyrie

from WordNet (r) 3.0 (2006)

Valkyrie
    n 1: (Norse mythology) one of the maidens of Odin who chose
         heroes to be slain in battle and conducted them to Valhalla

from The Collaborative International Dictionary of English v.0.48

Valkyria \Val*kyr"i*a\, n. [Icel. valkyrja (akin to AS.
   w[ae]lcyrie); valr the slain + kj[=o]sa to choose. See
   {Valhalla}, and {Choose}.] (Scand. Myth.)
   One of the maidens of Odin, represented as awful and
   beautiful, who presided over battle and marked out those who
   were to be slain, and who also ministered at the feasts of
   heroes in Valhalla. Now commonly written {Valkyrie}. [Written
   also {Valkyr}, {Valkyrie}, {Walkyrie} and {Walkyr}.]
   [1913 Webster +PJC]