The Collaborative International Dictionary
Quaking \Quak"ing\, a. & n. from Quake, v. Quaking aspen (Bot.), an American species of poplar ( Populus tremuloides), the leaves of which tremble in the lightest breeze. It much resembles the European aspen. See Aspen. Quaking bog, a bog of forming peat so saturated with water that it shakes when trodden upon. Quaking grass. (Bot.)
One of several grasses of the genus Briza, having slender-stalked and pendulous ovate spikelets, which quake and rattle in the wind. Briza maxima is the large quaking grass; Briza media and Briza minor are the smaller kinds.
Rattlesnake grass ( Glyceria Canadensis).
Wiktionary
n. (taxlink Populus tremuloides species), the American aspen, so called from its leaf whose flattened petioles cause them to tremble in the breeze.
WordNet
n. Old World aspen with a broad much-branched crown; northwestern Europe and Siberia to North Africa [syn: European quaking aspen, Populus tremula]
Usage examples of "quaking aspen".
He fed Rhodry infusions of coltsfoot and elecampe to bring up the phlegm, hyssop and pennyroyal to make him sweat, and quaking aspen as a general febrifuge.
The trees were mountain alder, clumps of quaking aspen, willow, hawthorn, and an occasional spruce.
Then the cleft opened into a spacious green valley, its sides lined with a thick growth of quaking aspen.
Behind me, far below, the stream wound like a silver ribbon, fringed with dark conifers and the changing, dying foliage of poplar and quaking aspen.
Thus they walked in shadow, making their way up a path that was strewn with rubble and far too narrow for their horses, which had been left in a grove of yellow-leaf quaking aspen below.