Definition

Living large and ostentatiously wealthy, rolling in fortune, fame, and success while making sure everyone knows about it. The flex when you're actually successful enough to back up the bragging.

Example Usage

Ever since she got that promotion, she's been ballin' with the new car and fancy apartment.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=ballin%27&defid=4875360)