swamp buttercup

noun

: a common North American perennial herb (Ranunculus septentrionalis) of low wet places with thick fibrous roots, elongate often trailing or spreading branches, mostly ternate leaves, and bright yellow flowers

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