beast

(noun): Any animal other than a human; usually only applied to land vertebrates, especially large or dangerous four-footed ones.
(noun): (more specific) A domestic animal, especially a bovine farm animal.
(noun): A person who behaves in a violent, antisocial or uncivilized manner.
(noun): Anything regarded as larger or more powerful than one of its normal size or strength.
(noun): Someone who is particularly impressive, especially athletically or physically.
(noun): (prisons) A sex offender.
(noun): Something unpleasant and difficult.
(noun): A thing or matter, especially a difficult or unruly one.
(verb): To impose arduous exercises, either as training or as punishment.
(adjective): (chiefly Midwestern and northeastern US) great; excellent; powerful