setterwort
/ˈsɛtərwɜrt/
noun
- A poisonous plant with yellow flowers and large leaves, also known as hellebore, historically used in medicine but dangerous if eaten.
- In medieval times, setterwort was sometimes used in small doses as a purgative.
- The hiker recognized setterwort growing near the stream and warned others not to touch it.
- The garden guide listed setterwort as a plant to avoid because of its toxicity.