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|Noun||1.||genus Tribulus - annual or perennial herbs or subshrubs of warm regions|
rosid dicot genus - a genus of dicotyledonous plants
bean-caper family, family Zygophyllaceae, Zygophyllaceae - small trees, shrubs, and herbs of warm arid and saline regions; often resinous; some poisonous: genera Zygophyllum, Tribulus, Guaiacum, Larrea