Norwich (nôrˈwĭch, –ĭch) [key], industrial city (1990 pop. 37,391), SE Conn., seat of New London co., on hilly ground, where the Yantic and Shetucket form the Thames; settled 1659, inc. 1784, town and city consolidated 1952. Chemicals, plastics, and paper products are manufactured. The last great battle between the Mohegans and Narragansetts took place on the site in 1643, and the tribal chiefs are buried there. Norwich was a leading colonial industrial city; Thomas Danforth began making pewterware there in 1733. The many historic structures include the Leffingwell Inn (1675); the birthplace and home of Benedict Arnold; and the home of Samuel Huntington. The Mohegan Sun casino is in neighboring Uncasville.