Noun xanthium has 1 sense
  1. Xanthium, genus Xanthium - coarse herbs having small heads of greenish flowers followed by burrs with hooked bristles
    --1 is a kind of asterid dicot genus
    --1 is a member of
     Compositae, family Compositae, Asteraceae, family Asteraceae, aster family
    --1 has members: cocklebur, cockle-bur, cockleburr, cockle-burr
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