pigeon pox

noun

: a virus disease of pigeons which is closely related to fowl pox and the virus of which is often used to produce a vaccine against fowl pox that is safer though less lastingly effective than that prepared with fowl pox virus

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