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Noun: clotbur
  1. Any of several erect biennial herbs of temperate Eurasia having stout taproots and producing burs
    "clotbur's clingy burs inspired the invention of Velcro";
    - burdock

Derived forms: clotburs

Type of: subshrub, suffrutex

Part of: Arctium, genus Arctium

Encyclopedia: Clotbur