- Any of several plants of the genus Rumex, having acid-flavored leaves sometimes used as salad greens, especially R. acetosella, a widely naturalized Eurasian species. Also called dock4. (noun)
- Any of various plants of the genus Oxalis, having usually compound leaves with three leaflets. (noun)
- A brownish orange to light brown. (noun)
- A sorrel-colored horse or other animal. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.