WordReference Random House Unabridged Dictionary of American English © 2026
cock•le•bur
(kok′əl bûr′),USA pronunciation n.
- Plant Biologyany composite plant of the genus Xanthium, comprising coarse weeds with spiny burs.
- Plant Biologythe burdock, Arctium lappa.
- cockle2 + bur1 1795–1805
'cocklebur' also found in these entries (note: many are not synonyms or translations):