The definition of beast is an animal, usually a huge four-footed mammal or is a mean and scornful person.
(noun)See beast in Webster's New World College Dictionary
noun
Origin: ME & OFr beste < L bestia < ? IE base *dheus- > deer
See beast in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English beste
Origin: , from Old French
Origin: , from Latin bēstia
.Learn more about beast