[n] a state in south central United States; one of the Confederate states during the American Civil War
[n] a unit of surface area equal to 100 square meters
[n] a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
air, America, American state, area unit, argonon, Arkansas River, capital of Arkansas, chemical element, element, Fayetteville, Fort Smith, hectare, Hot Springs, Hot Springs National Park, inert gas, Jonesboro, Little Rock, noble gas, Ouachita, Ouachita River, Ozark Mountains, Ozark Plateau, Ozarks, Pine Bluff, square measure, Texarkana, U.S., U.S.A., United States, United States of America, US, USA
\Ar\, conj. Ere; before. [Obs.] --Chaucer.