Source : Webster's Revised Unabridged Dictionary (1913)

Necropolis \Ne*crop"o*lis\, n.; pl. {Necropolises}. [NL., fr.
   Gr. ?; ? a dead body, adj., dead + ? city.]
   A city of the dead; a name given by the ancients to their
   cemeteries, and sometimes applied to modern burial places; a
   graveyard.

Source : WordNet®

necropolis
     n : a tract of land used for burials [syn: {cemetery}, {graveyard},
          {burial site}, {burial ground}, {burying ground}, {memorial
         park}]
     [also: {necropoleis} (pl)]