| 1. | a shrub, Prunus maritima, of the rose family, of the seashores of northeastern North America, having sharply toothed leaves and white flowers. |
| 2. | the purple or blackish edible fruit of this shrub. |
| beach plum n. A seacoast shrub (Prunus maritima) in the rose family, native to northeast North America and having white flowers and edible, plumlike fruits used in jams, jellies, and pies. |