English noun: caltrop |
1. | caltrop (plant) tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed |
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| Synonyms | devil's weed, Tribulus terestris |
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| Broader (hypernym) | subshrub, suffrutex |
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| Member meronym | genus Tribulus, Tribulus |
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2. | caltrop (plant) a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits |
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| Synonyms | water chestnut, water chestnut plant |
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| Broader (hypernym) | aquatic plant, hydrophyte, hydrophytic plant, water plant |
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| Narrower (hyponym) | Jesuits' nut, ling, ling ko, Trapa bicornis, Trapa natans, water caltrop |
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| Member meronym | genus Trapa, Trapa |
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3. | caltrop (plant) Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America |
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| Synonyms | Centauria calcitrapa, star-thistle |
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| Broader (hypernym) | centaury |
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