gorilla

noun4

1. •
   An ape of the genus Gorilla; endemic to the forests of Central Africa and typified by superlative physical size and strength in relation to other primates.
2. •
   A big and brutish man or a thug; a goon or ruffian.

   • "I'll do the old gorilla the justice to say that he is open-handed with money." — 1929
3. •
   (informal) A powerful person or organization; a heavyweight or behemoth.

   • The two industry gorillas — IBM and AT&T — will get together to decide who will provide different communications services, Biddle stated. — 1977
4. •
   (UK, slang) 1000 pounds sterling or dollar.