WordNet
red pimpernel
n. herb with scarlet or white or purple blossoms that close at approach of rainy weather [syn: scarlet pimpernel, poor man's weatherglass, Anagallis arvensis]
Usage examples of "red pimpernel".
For instance, the blue and red pimpernel, the primrose and cowslip, which are considered by many of our best botanists as varieties, are said by Gä.