behemoth
noun /bɪˈhiːməθ/
  /bɪˈhiːməθ/
(formal)- something that is very big and powerful, especially a company or organization
- a multinational corporate behemoth
 - She works in a seventy-storey behemoth in Manhattan.
 
Word Originlate Middle English: from Hebrew běhēmōt̲, intensive plural of běhēmāh ‘beast’.