Long Island Sound
a large body of water lying between Long Island and New York and Connecticut; length, about 110 miles; width varying from 2 to 20 miles. On the W. it is connected with the Atlantic by a strait called the East River, New York Bay, and the Narrows, and on the E. by a narrow passage called the Race. The principal rivers flowing into the Sound from the mainland are the Housatonic, Connecticut, and Thames.
It is the route of a very large and important trade between the city of New York and the East, and is navigated by numerous regular lines of freight and passenger steamers.