1A native or inhabitant of the Ozark region; = Ozarker .
historical A system formerly regarded as intervening between the Late Cambrian and the Early Ordovician of North America.
historical Of, relating to, or designating the Ozarkian system.
2Of, relating to, or characteristic of the Ozark region of the central United States, its inhabitants, or the variety of English spoken there.
Late 19th century; earliest use found in Forest and Stream: a weekly journal of the rod and gun. From the name of Ozark, a region of the central United States + -ian.