Wall Street is a general term used to refer to the US financial markets as a whole (the stock & bond market, banks, brokerages, etc) as well as the people who work in finance, like bankers, brokers, portfolio managers, etc.
Wall Street is also a real street in the financial district of lower Manhattan in NYC.
For more information, please visit: What is Wall Street? A Simple Explanation for Kids, Teens and Beginners
