γέεννα

Gehenna, pr. the valley of Hinnom, south of Jerusalem, once celebrated for the horrid worship of Moloch, and afterwards polluted with every species of filth, as well as the carcasses of animals, and dead bodies of malefactors; to consume which, in order to avert the pestilence which such a mass of corruption would occasion, constant fires were kept burning; hence, hell, the fires of Tartarus, the place of punishment in Hades, Mt. 5:22, 29, 30; 10:28; 18:9, et al.