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(Plants) the burdock
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|Noun||1.||clotbur - any of several erect biennial herbs of temperate Eurasia having stout taproots and producing burs|
Arctium minus, common burdock, lesser burdock - a plant that is ubiquitous in all but very acid soil; found in most of Europe and North Africa
Arctium lappa, great burdock, greater burdock, cocklebur - 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