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
Part of Speech: noun proper masculine
Of Hebrew origin [H4432]; Moloch (that is, Molek), an idol: - Moloch.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root Μολόχ; click on the second column to search for that grammatical form of the root Μολόχ; click on the third column to search for that word and grammatical form; click on the total to search for the root Μολόχ.