Of a yellowish or redish brown color; as, a sorrel horse.
- 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.
- Any of various plants of the genus Oxalis, having usually compound leaves with three leaflets.
- A brownish orange to light brown.
- A sorrel-colored horse or other animal.