DFa type of small grain used as food for chickens, and for making flour 荞麦
Examples from the Corpus
buckwheat• Traditionally, rain-fed terraces are constructed on steeper slopes in the Middle Mountains for the production of maize, millet and buckwheat.• For wholefood enthusiasts, I would recommend buckwheat pasta rather than wholemeal, which I think is rather dull in flavour and texture.• The talented chef uses buckwheat soba noodles effectively.
Originbuckwheat
(1500-1600)Middle Dutchboecweit, from boec“beech” + weit“wheat”; because the grains are the same shape as beech-tree seeds