prickly shield fern

noun

: a North American fern (Polystichum braunii) having its almost coriaceous more or less evergreen fronds densely chaffy with pale brown scales

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