Source : Webster's Revised Unabridged Dictionary (1913)

Hades \Ha"des\, n. [Gr.? + ? to see. Cf. {Un-}, {Wit}.]
   The nether world (according to classical mythology, the abode
   of the shades, ruled over by Hades or Pluto); the invisible
   world; the grave.

         And death and Hades gave up the dead which were in
         them.                                    --Rev. xx. 13
                                                  (Rev. Ver. ).

         Neither was he left in Hades, nor did his flesh see
         corruption.                              --Acts ii. 31
                                                  (Rev. Ver.).

         And in Hades he lifted up his eyes, being in torments.
                                                  --Luke xvi.23
                                                  (Rev. Ver.).

Source : WordNet®

Hades
     n 1: (Greek mythology) the god of the underworld in ancient
          mythology; brother of Zeus and husband of Persephone
          [syn: {Pluto}, {Aides}, {Aidoneus}]
     2: (religion) the world of the dead; "he didn't want to go to
        hell when he died" [syn: {Hel}, {Hell}, {infernal region},
         {netherworld}, {Scheol}, {underworld}]