Saint Lawrence

geographical name

Saint Law·​rence sānt-ˈlȯr-ən(t)s 

sənt-,

-ˈlär-

river 760 miles (1223 kilometers) long in Ontario and Quebec, Canada, bordering on the U.S. in New York, flowing from Lake Ontario northeast into the Atlantic Ocean, and forming at its mouth a wide bay (the Gulf of Saint Lawrence)