2. Proper noun. (American English) Someone from the Ozarks, Missouri. ¹
3. Noun. (minerology) A type of rock (hydrous aluminum-silicate) that is native to the Arkansas; also called thomsonite. ¹
4. Noun. (mineralogy archaic) The mineral mozarkite of the Missouri, Ozark region. ¹
¹ Source: wiktionary.com