| cocklebur | (n) any coarse weed of the genus Xanthium having spiny burrs, Syn. cockle-bur, cockle-burr, cockleburr |
| great burdock | (n) burdock having heart-shaped leaves found in open woodland, hedgerows and rough grassland of Europe (except extreme N) and Asia Minor; sometimes cultivated for medicinal and culinary use, Syn. cocklebur, greater burdock, Arctium lappa |
| Cocklebur | n. (Bot.) A coarse, composite weed, having a rough or prickly fruit; one of several species of the genus |