| Noun | 1. | button snakeroot - coarse prickly perennial eryngo of United States thought to cure rattlesnake bite |
| 2. | button snakeroot - coarse prickly perennial eryngo with aromatic roots; southeastern United States; often confused with rattlesnake master Synonyms: Eryngium aquaticum | |
| 3. | button snakeroot - any of various North American plants of the genus Liatris having racemes or panicles of small discoid flower heads |