in Geography, a township of Berkshire county, in the state of Massachusetts in North America. It is 140 miles north-west of Boston, and contains 2040 inhabitants. In the northern part of this district, a stream called Hudson's brook, has worn a channel through a stratum of white marble, and over the channel the rocks form a fine natural bridge which is 12 or 15 feet long, 10 feet broad, and more than 60 feet above the water.