noun Cir·si·um \ˈsərs(h)ēəm\

Definition of Cirsium

  1. :  a widely distributed genus of prickly herbs (family Compositae) having the bristles of the pappus plumose — compare carduus — see bull thistle

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Origin and Etymology of cirsium

New Latin, from Greek kirsion, a thistle, probably from kirsos swollen vein; from the use of the thistle in antiquity in the treatment of swollen veins

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a trip made at another's expense

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