driftweed

noun

1

: seaweed or other aquatic vegetation drifted ashore

2

: any of various seaweeds (as members of the genus Laminaria) that tend to break free and drift ashore

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