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[From its being in bloom when shad are found in streams.]
(Plants) another name for serviceberry1
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|Noun||1.||shadbush - any of various North American trees or shrubs having showy white flowers and edible blue-black or purplish fruit|
alderleaf Juneberry, alder-leaved serviceberry, Amelanchier alnifolia - shrub or small tree of northwestern North America having fragrant creamy white flowers and small waxy purple-red fruits
Amelanchier bartramiana, Bartram Juneberry - open-growing shrub of eastern North America having pure white flowers and small waxy almost black fruits