Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun clotbur
1 sense of clotbur                                                      
Sense 1
burdock, clotbur -- (any of several erect biennial herbs of temperate Eurasia having stout taproots and producing burs)
       => subshrub, suffrutex -- (low-growing woody shrub or perennial with woody base)
