clotbur

 
Pronunciation: /ˈklɒtbəː/

noun

  • a herbaceous plant of the daisy family with burred fruits, native to tropical America but now found all over the world.
    • Genus Xanthium, family Compositae: two or three species
  • chiefly North American a burdock.

Origin:

mid 16th century: from dialect clote 'burdock' + burr