sheep bur

noun

: any of several plants whose fruits or seeds tend to lodge in sheep's wool: such as

a

: an annual composite weed (Acanthospermum australe) of the southern U.S. and tropical regions with a prickly fruit shaped like a starfish

b

: cocklebur

c

: stickseed

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