aspen
noun(as-pen)
any of several poplars (especially Populus tremula of Europe and P. tremuloides and P. grandidentata of North America) with leaves that flutter in the lightest wind because of their flattened petioles
aspen
geographical name(as-pen)
resort city in west central Colorado population 6658
aspen
noun(as-pen)
an aspen (Populus tremuloides) chiefly of the U.S. and Canada with small nearly circular leaves that have flattened petioles and finely serrate margins and that flutter in the slightest breeze