[ahr-kuh
n-saw; also, for 2 ar-kan-zuhs] 
| 1. | state in S central United States; 2,285,513. 53,103 sq. mi. (137,537 sq. km). Capital: Little Rock. Abbreviation: AR (for use with zip code), Ark. |
| 2. | a river flowing E and SE from central Colorado into the Mississippi in SE Arkansas. 1450 mi. (2335 km) long. |
[ahr-kan-zuhn] , Ar⋅kan⋅si⋅an [ahr-kan-zee-uhn] , noun, adjective | Ar·kan·sas River (är'kən-sô', är-kān'zəs) A river of the south-central United States rising in the Rocky Mountains in central Colorado and flowing about 2,333 km (1,450 mi) generally southeastward to the Mississippi River in southeast Arkansas. It was an important trade and travel route in the 19th century. |
State in the south-central United States bordered by Missouri to the north, the Mississippi River to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its capital and largest city is Little Rock.
Note: One of the Confederate states during the Civil War.