The Collaborative International Dictionary
Populus dilatata
Poplar \Pop"lar\, n. [OE. popler, OF. poplier, F. peuplier, fr. L. populus poplar.] (Bot.)
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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.
The timber of the tulip tree; -- called also white poplar. [U.S.]