Gehenna

n. place or state of torture or suffering; residence of condemned souls; inferno, hell; valley of Hinnom (near Jerusalem) where propitiatory sacrifices were made to Moloch (Biblical)

Note: Tanakh quotes are from the Judaica press Tanach. New Testament quotes from the Bible in this article are from the King James Version. Gehenna (or gehenom or gehinom (גהינום)) is the Jewish hell or purgatory. It has sometimes been described as a final punishment for the wicked and sometimes as a spiritual forge in which souls are purified after death. In English, Jews commonly use the term "hell" in place of "gehenna." The name derived from the burning garbage dump near Jerusalem (the Hinnom gulch), metaphorically identified with the entrance to the underworld of punishment in the afterlife.
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Noun
1. a place where the wicked are punished after death
(synonym) Tartarus
(hypernym) Hell, perdition, Inferno, infernal region, nether region, the pit

(n.)
The valley of Hinnom, near Jerusalem, where some of the Israelites sacrificed their children to Moloch, which, on this account, was afterward regarded as a place of abomination, and made a receptacle for all the refuse of the city, perpetual fires being kept up in order to prevent pestilential effluvia. In the New Testament the name is transferred, by an easy metaphor, to Hell.
  

[Judaic] "Place of Torment." The Valley of Hinnom, south-west of Jerusalem, where Solomon, king of Israel, built "a high place", or place of worship, for the gods Chemosh and Moloch. The valley came to be regarded as a place of abomination because some of the Israelites sacrificed their children to Moloch there. In a later period it was made a refuse dump and perpetual fires were maintained there to prevent pestilence. Thus, in the New Testament, Gehenna became synonymous with hell.