Behemoth

Noun

 * 1) A great and mighty beast described in Job 40:15-24 used to illustrate God's mightiness.
 * 2) A great and mighty monster.
 * 3) Something which has the qualities of great power and might, and monstrous proportions.

Synonyms

 * (something of great size and power): colossus, leviathan, mammoth, titan