noun

• An animal, especially a large or dangerous land vertebrate.
  "[…] it always had the making of a fine beast about it, but up to the time I had it up here in a stall by itself it did not get the chance to make any headway [ie, fatten], all its mates were down on it and it never seemed to fill itself. […] A big framed beast takes a lot of food — expensive food at that [—] to keep it doing […]"
• An animal, especially a large or dangerous land vertebrate.
  "Language is what separates man and beast."
• (slang) Anything regarded as larger or more powerful than one of its normal size or strength.
  "That is a beast of a stadium."
• (slang) Someone who is particularly impressive, especially athletically or physically.

verb

• (British, military) To impose arduous exercises, either as training or as punishment.
• (Scotland, slang, transitive) To engage in sexual intercourse with, particularly in an illicit context.
  "That teacher is under investigation for beasting wee 'uns."

adj

• (slang, chiefly Midwestern and northeastern US) great; excellent; powerful
  "There is another type from Siemens which is the HYB 39S64XXX(AT/ATL) -8B version (notice the "B" and the end) which is totally beast altogether."

name

• (biblical) A figure in the Book of Revelation (Apocalypse), often identified with Satan or the Antichrist.
  "The Number of the Beast Is 666 (13:16-18) John's vision concludes with the notorious reference to the "mark of the beast" and the number 666."
• (US, military, slang) A cadet's basic training at West Point.
  "Plebes spend their first summer at Cadet Basic Training — Beast Barracks — where they get soldierized."