a North American shrub or small tree, Viburnum lentago, of the honeysuckle family, having flat-topped clusters of small white flowers and edible, berrylike black drupes.
sheep·ber·ry (shēp'běr'ē) n. Either of two eastern North American shrubs or trees (Viburnum lentago or V. prunifolium) having clusters of white flowers and edible blue-black berries. Also called nannyberry.
[From the resemblance of the berries to sheep droppings.]