What does Potomac mean?
• POTOMAC (noun) The noun POTOMAC has 2 senses: 1. a river in the east central United States; rises in West Virginia in the Appalachian Mountains and flows eastward, forming the boundary between Maryland and Virginia, to the Chesapeake Bay 2. term sometimes used to refer to Washington, D.C. Familiarity information: POTOMAC used as a noun is rare.