mountain willow

noun

1

: a much-branched shrubby willow (Salix planifolia) of Europe and northeastern North America

2

: a tree willow (Salix scouleriana) of uplands in the western U.S.

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now