There are 2 definitions of aspen in English:

aspen1

Syllabification: as·pen
Pronunciation: /ˈaspən
 
/

noun

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
More example sentences
  • They prefer willows, maples, aspens, and poplars, and by preferentially choosing those species, they can have an important impact on the tree species composition of their communities.
  • The trail they followed was lead by a small stream to their right, or to the north, while there left side was a light forest of trees that were no longer palm trees, but aspens and pine trees.
  • The stony soil below was covered by dense forests of live oak, Douglas fir, aspen, maple, ponderosa pine, madrone, Arizona cypress, and juniper.

Origin

late Middle English: from dialect asp (in the same sense) + -en2, forming an adjective later used as a noun (late 16th century).

Definition of aspen in:

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Word of the day flippant
Pronunciation: ˈflipənt
adjective
not showing a serious or respectful attitude

There are 2 definitions of aspen in English:

Aspen2

Syllabification: As·pen
Pronunciation: /ˈaspən
 
/
A resort in south central Colorado; population 5,902 (est. 2008) A thriving recreational center, it is noted particularly for its skiing facilities.

Definition of aspen in: