Gehenna, the valley of Hinnom, on the S. of Jerusalem, with Tophet (q.v.) at its eastern end; became the symbol of hell from the fires kept burning in it night and day to consume the poisonous gases of the offal accumulated in it.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gefle * Gehenna Bailiffs