| BU | or member of genus Fagopyrum |
|---|---|
| BU | a pancake made with buckwheat flour |
| BU | a family of plants of order Polygonales chiefly of the north temperate zone |
| BU | tree of low-lying coastal areas of southeastern United States having glossy leaves and racemes of fragrant white flowers |
| BU | the first known example of a fullerene |
| BU | a short descriptive poem of rural or pastoral life |
| BU | a country person |
| BU | used of idealized country life |
| BU | relating to shepherds or herdsmen or devoted to raising sheep or cattle |
| BU | capital and largest city of Romania in southeastern Romania |
| BU | a partially opened flower |
| BU | a swelling on a plant stem consisting of overlapping immature leaves or petals |