Who is a baller?

A “baller” is a slang term that is most commonly used to describe someone who is successful or wealthy, often in the context of being able to afford luxurious or extravagant items or experiences. The term can also be used as a verb, such as “to ball out,” meaning to live or spend lavishly. It also can be used to describe a person who is very good in a specific activity or sport, especially basketball, thus “balling” in that context.