plum - any of numerous varieties of small to medium-sized round or oval smooth-skinned fruit with a single pit

genus Prunus, Prunus - a genus of shrubs and trees of the family Rosaceae that is widely distributed in temperate regions

wild plum, wild plum tree - an uncultivated plum tree or shrub

common plum, Prunus domestica - any of various widely distributed plums grown in the cooler temperate areas

bullace, Prunus insititia - small wild or half-domesticated Eurasian plum bearing small ovoid fruit in clusters

big-tree plum, Prunus mexicana - small tree of southwestern United States having purplish-red fruit sometimes cultivated as an ornamental for its large leaves

Canada plum, Prunus nigra - small tree native to northeastern North America having oblong orange-red fruit

cherry plum, myrobalan, myrobalan plum, Prunus cerasifera - small Asiatic tree bearing edible red or yellow fruit; used in Europe as budding stock

Japanese plum, Prunus salicina - small tree of China and Japan bearing large yellow to red plums usually somewhat inferior to European plums in flavor

Pacific plum, Prunus subcordata, Sierra plum - shrub of the Pacific coast of the United States bearing small red insipid fruit

fruit tree - tree bearing edible fruit