willow scab

noun

: a disease of willow trees caused by a fungus (Fusicladium saliciperdum) and characterized by rapid killing of leaves and canker and dieback of young shoots

called also willow blight

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