Federal Reserve Bank
What Does Federal Reserve Bank Mean?
The banks that carry out Fed operations, including controlling the money supply and regulating member banks. There are 12 District Feds, headquartered in Boston, New York, Philadelphia, Cleveland, St. Louis, San Francisco, Richmond, Atlanta, Chicago, Minneapolis, Kansas City and Dallas.
They are also known as "district Feds".
Investopedia explains Federal Reserve Bank
These banks are the operating arms of the central bank. They implement the policies of the Federal Reserve Board and also carry out economic research.