noun Xan·thi·um \ˈzan(t)thēəm\

Definition of Xanthium

  1. :  a genus of coarse and rough or spiny herbs (family Compositae) having small heads of greenish flowers of which the pistillate enclosed in an involucre becomes a burr covered with hooked bristles — see cocklebur

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Origin and Etymology of xanthium

New Latin, from Greek xanthion, a plant used to dye the hair yellow, from xanthos yellow

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to criticize severely

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