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nounAmerican basswood of the Allegheny region
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nounany of several North American trees of the genus Populus having a tuft of cottony hairs on the seedtype of:
Definition that contains cottonwood
- western balsam poplar cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath
- black cottonwood cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath
- populus trichocarpa cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath