| 1. caltrop [ Synonyms: devil's weed, tribulus terestris] | |
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Tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed
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| 2. caltrop [ Synonyms: water chestnut, water chestnut plant] | |
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A plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
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سنگھاڑا۔ |
| 3. caltrop [ Synonyms: centauria calcitrapa, star-thistle] | |
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Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America
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