any of several kinds of poplar tree (genus Populus) with flattened leafstalks that cause the leaves to flutter in the least breeze
adjective
of or like an aspen
city in central Colorado: ski resort: pop. 5,000
See aspen in American Heritage Dictionary 4
(ăsˈpən)
noun
Any of several trees of the genus Populus having leaves attached by flattened leafstalks so that they flutter readily in the wind.
adjective
Of or relating to one of these trees.
Shivering or trembling like the leaves of one of these trees.
(ăsˈpən)
A city of west-central Colorado in the Sawatch Range of the Rocky Mountains. Founded c. 1879 by silver prospectors, it is now a fashionable ski resort. Population: 5,730.