1) Merrimack river 2) Monitor foe 3) River 
county, central New Hampshire, U.S. It consists of a hilly upland region, bisected north-south by the Merrimack River, that becomes more mountainous ...
Merrimack is a cultivated variety of potato.
[n] - a river that rises in south central New Hampshire and flows through Concord and Manchester into Massachusetts and empties into the Atlantic Ocean
Merrimack River noun a river that rises in south central New Hampshire and flows through Concord and Manchester into Massachusetts and empties into the Atlantic Ocean