noun
- a small plant with bright red, blue, or white flowers that typically close in cloudy weather
Examples
- The scarlet pimpernel bloomed in the meadow.
- Pimpernel flowers are known to close before rain.
- She spotted a blue pimpernel growing wild in the field.
- The pimpernel’s petals were a brilliant red color.
- Farmers often use pimpernel as a natural weather indicator.