dust ball

noun

: a concretion composed of vegetable or mineral matter found in the intestines (as of the horse) and varying in size from a few ounces to several pounds

called also intestinal calculus

compare hair ball

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