lady's-thumb

[ ley-deez-thuhm ]
/ ˈleɪ dizˌθʌm /

noun

a smartweed, Polygonum persicaria, of the buckwheat family, having pink or purplish flowers and lance-shaped leaves with a spot resembling a thumbprint.

Origin of lady's-thumb

An Americanism dating back to 1830–40

Words nearby lady's-thumb

lady's not for burning, the, lady's-earrings, lady's-slipper, lady's-smock, lady's-thistle, lady's-thumb, lady's-tresses, lady-in-waiting, lady-killer, lady-of-the-night, ladybeetle

British Dictionary definitions for lady's-thumb

lady's-thumb

noun

the usual US name for red shank