Valhalla (n.) Look up Valhalla at Dictionary.com
heavenly hall in which Odin receives the souls of heroes slain in battle, 1696 (in Archdeacon Nicolson's "English Historical Library"), from Old Norse Valhöll "hall of the battle-slain;" first element from valr "those slain in battle," from Proto-Germanic *walaz (cognates: Old English wæl "slaughter, bodies of the slain," Old High German wal "battlefield, slaughter"), from PIE root *wele- (2) "to strike, wound" (cognates: Avestan vareta- "seized, prisoner," Latin veles "ghosts of the dead," Old Irish fuil "blood," Welsh gwel "wound"). Second element is from höll "hall," from PIE root *kel- (2) "to conceal" (see cell). Reintroduced by 18c. antiquaries. Figurative sense is from 1845.