noun

• (chiefly historical, also figuratively) A cemetery; especially a large one in or near a city.
  "In Turkey, the tombs, according to the custom of the ancients, are always without the towns; and as each tomb has uſually a large ſtone, and ſome maſonry, they conſtitute what may almoſt be called a ſecond town, which may be named, as formerly at Alexandria, Necropolis, or the city of the dead."
• (archaeology) An ancient site used for burying the dead, particularly if consisting of elaborate grave monuments.
  "These labours upon Phœnician necropoli are of great importance. [...] M. [Louis Félicien] de Saulcy, one of the first travellers who has thrown light upon these necropoli, devoted himself to a very interesting examination of the tombs of the kings, of the prophets and judges, and upon the immense necropolis that surrounds Jerusalem, like a funeral enceinte."