cockle-bur


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Noun1.cockle-bur - any coarse weed of the genus Xanthium having spiny burrscockle-bur - any coarse weed of the genus Xanthium having spiny burrs
genus Xanthium, Xanthium - coarse herbs having small heads of greenish flowers followed by burrs with hooked bristles
weed - any plant that crowds out cultivated plants