Entry from US English dictionary
1An industrial city in eastern Massachusetts, on the Charles River, west of Boston; population 32,365 (est. 2008). 2An industrial and commercial city in north central New York, near Lake Ontario and the Thousand Islands; population 27,310 (est. 2008). 3A city in northeastern South Dakota; population 20,488 (est. 2008). 4An industrial city in south central Wisconsin; population 22,930 (est. 2008).
Definition of Watertown in: