noun

• A river, the Richelieu River, in Quebec, Canada, which flows from Lake Champlain to the St. Lawrence River, and named after Cardinal Richelieu.
• A tributary of the Montmorency River in Quebec.
• A city on the Richelieu River in Rouville Regional County Municipality, Quebec, Canada.
• A commune in Indre-et-Loire department, Centre-Val de Loire, France.