Definition

The practice of performing music publicly in streets, subways, or other high-traffic areas in exchange for donations from passersby. A legitimate (if unpredictable) way to earn money while sharing your musical talents with the world.

Example Usage

The guitar player busking in the subway station plays the same three songs every single day.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=busking&defid=9148)