Waterbury, industrial city (1990 pop. 108,961), New Haven co., W Conn., on the Naugatuck River; settled 1674, inc. as a city 1853. The city, once famous for its brass industry, is a financial and commercial center of W Connecticut. Clocks and watches, tools, instruments, plastics, chemicals, and electronic parts are among the manufactures of Waterbury. The city's historical society has notable collections. Waterbury is the site of a branch of the Univ. of Connecticut and Post Univ. of Waterbury.