| 1. | a plant, esp. Fagopyrum esculentum, cultivated for its triangular seeds, which are used as a feed for animals or made into a flour for human consumption, as in pancakes or cereal. Compare buckwheat family. |
| 2. | the seeds of this plant. |
| 3. | Also, buckwheat flour. flour made from seeds of buckwheat. |
| 4. | made with buckwheat flour: buckwheat pancakes. |