Source : Webster's Revised Unabridged Dictionary (1913)

Moloch \Mo"loch\, n. [Heb. molek king.]
   1. (Script.) The fire god of the Ammonites in Canaan, to whom
      human sacrifices were offered; Molech. Also applied
      figuratively.

   2. (Zo["o]l.) A spiny Australian lizard ({Moloch horridus}).
      The horns on the head and numerous spines on the body give
      it a most formidable appearance.

Source : WordNet®

Moloch
     n 1: a tyrannical power to be propitiated by human subservience
          or sacrifice; "the great Moloch of war"; "duty has
          become the Moloch of modern life"- Norman Douglas
     2: god of the Ammonites and Phoenicians to whom parents
        sacrificed their children [syn: {Molech}]
     3: any lizard of the genus Moloch