any of several trees of the salicaceous genus Populus, such as P. tremula of Europe, in which the leaves are attached to the stem by long flattened stalks so that they quiver in the wind
WordReference Random House Learner's Dictionary of American English © 2025
as•pen /ˈæspən/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- Plant Biologya kind of poplar tree of Europe and North America, having leaves that tremble in the slightest breeze.
as•pen
(as′pən),USA pronunciation n.
adj.
As•pen (as′pən),USA pronunciation n.
- Plant Biologyany of various poplars, as Populus tremula, of Europe, and P. tremuloides (quaking aspen) or P. alba (white aspen,) of America, having soft wood and alternate ovate leaves that tremble in the slightest breeze.
adj.
- Plant Biologyof or pertaining to the aspen.
- trembling or quivering, like the leaves of the aspen.
- 1350–1400; Middle English aspen (adjective, adjectival), Old English æspen; cognate with Old Frisian espen (adjective, adjectival), espenbeam, Middle Dutch espenboom, Old High German espîn (adjective, adjectival). See asp2, -en2
As•pen (as′pən),USA pronunciation n.
- Place Namesa town in central Colorado: ski resort. 3678.
Collins Concise English Dictionary © HarperCollins Publishers::
'aspen' also found in these entries (note: many are not synonyms or translations):
Aspen Hill
- asp
- poplar
- quaking aspen
- salicin
- schuss
- trembling poplar
- white aspen
- willow family