Quaking aspen Meaning, Definition & Usage

  1. noun Old World aspen with a broad much-branched crown; northwestern Europe and Siberia to North Africa
    Populus tremula; European quaking aspen.

WordNet

Definitions
  1. (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.

Webster 1913