[gohld-thred] 
| a white-flowered plant, Coptis trifolia, of the buttercup family, having a slender, yellow root that is sometimes used as a tonic. |
| gold·thread (gōld'thrěd') n. Any of several plants of the genus Coptis, having white flowers, slender yellow roots, ternately divided evergreen leaves, and clusters of follicles. |
