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.