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Noun: Tribulus terrestris
  1. Tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed
    "Farmers struggle to control Tribulus terrestris in their pastures";
    - caltrop, devil's weed

Type of: subshrub, suffrutex

Part of: genus Tribulus, Tribulus

Encyclopedia: Tribulus terrestris