I. ˈaspən, ˈaas-, ˈais- also ˈȧs- or -pin adjective
Etymology: Middle English, from aspe, n. + -en
1.
a. : of, relating to, or resembling the aspen
b. : made of the wood of the aspen
2. : quivering like the leaves of the aspen : tremulous , quaking
II. noun
( -s )
Etymology: alteration (influenced by aspen ) (I) of Middle English aspe, from Old English æspe, æpse; akin to Old High German aspa aspen, Old Norse ösp, Latvian apsa, Russian osina
: any of several poplars (especially Populus tremula of Europe and P. tremuloides and P. grandidentata of No. America) the leaves of which flutter in the lightest wind on account of their flattened petioles