Pop·lar n. Bot.
1. Any tree of the genus Populus; also, the timber, which is soft, and capable of many uses.
Note: ☞ The aspen poplar is Populus tremula and Populus tremuloides; Balsam poplar is Populus balsamifera; Lombardy poplar (Populus dilatata) is a tall, spiry tree; white poplar is Populus alba.
2. The timber of the tulip tree; -- called also white poplar. [U.S.]
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Asp·en Asp n. Bot. One of several species of poplar bearing this name, especially the Populus tremula, so called from the trembling of its leaves, which move with the slightest impulse of the air.
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Populus tremula
n : Old World aspen with a broad much-branched crown;
northwestern Europe and Siberia to North Africa [syn: quaking
aspen, European quaking aspen]