aspen

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as·pen / ˈaspən/ • n. a poplar tree with rounded, long-stalked, and typically coarsely-toothed leaves that tremble in even a slight breeze. • Genus Populus, family Salicaceae: several species, in particular the North American quaking aspen (P. tremuloides) and bigtooth aspen (P. grandidentata) and the European P. tremula.

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