Definition: The term "beefsteak" is a slang term used to describe a person who has been drinking heavily and frequently engages in risky behavior. It's often associated with a sense of excitement or partying, as well as a lack of inhibitions and impulsiveness. The term comes from the word for steak, which sounds like it could be an ox, but can also refer to a type of fruit that is similar in shape and texture to a grapefruit.