Xanthium
- n. A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; cocklebur; clotbur.
The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.