Thayer's Greek Lexicon

 Molech = "king"
1. the name of the idol god of the Ammonites, to which human
victims, particularly young children were offered in sacrifice.
Its image was a hollow brazen figure, with the head of an ox, and
outstretched human arms. It was heated red hot by a fire from
within, and the little ones placed in its arms to be slowly
burned, while to prevent the parents from hearing the dying
cries, the sacrificing priests beat drums