Aspen (noun)

1. A tree of the poplar family, which has smooth white bark and leaves that quiver in the slightest breeze.
2. The wood of this tree.

Origin:

Old english æspe, of germanic origin; related to dutch espen and german espen.

Examples:

1. The aspen trees rustled in the wind.
2. The aspen leaves were turning yellow in the fall.
3. The aspen wood was used to make the furniture.
4. The aspen bark was smooth and white.
5. The aspen tree is common in the western mountains.