'Merrimack' definitions:

Definition of 'Merrimack'

(from WordNet)
noun
A river that rises in south central New Hampshire and flows through Concord and Manchester into Massachusetts and empties into the Atlantic Ocean [syn: Merrimack, Merrimack River]

Merrimack -- U.S. County in New Hampshire

From: Gazetteer 2000
Name :
Merrimack -- U.S. County in New Hampshire
Population (2000) :
136225
Housing Units (2000) :
56244
Land area (2000) :
934.430198 sq. miles (2420.162999 sq. km)
Water area (2000) :
22.060394 sq. miles (57.136156 sq. km)
Total area (2000) :
956.490592 sq. miles (2477.299155 sq. km)
Located within :
New Hampshire (NH), FIPS 33
Location :
43.277704 N, 71.637253 W