aspen

¹ American  

[as-puhn] / ˈæs pən /

noun

1. any 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.

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adjective

1. of or relating to the aspen.

2. trembling or quivering, like the leaves of the aspen.

Aspen ² American  

[as-puhn] / ˈæs pən /

noun

1. a town in central Colorado: ski resort.

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aspen British  

/ ˈæspən /

noun

1. Archaic name: asp.  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

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adjective

1. archaic trembling

Etymology

Origin of aspen

1350–1400; Middle English aspen (adj.), Old English æspen; cognate with Old Frisian espen (adj.), espenbeam, Middle Dutch espenboom, Old High German espîn (adj.). See asp ², -en ²