Poplar \Pop"lar\, n. [OE. popler, OF. poplier, F. peuplier, fr.
L. populus poplar.] (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 {P.
tremuloides}; Balsam poplar is {P. balsamifera};
Lombardy poplar ({P. dilatata}) is a tall, spiry tree;
white poplar is {Populus alba}.
2. The timber of the tulip tree; -- called also {white
poplar}. [U.S.]