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English noun: caltrop

1. caltrop (plant) tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed


Synonymsdevil's weed, Tribulus terestris


Broader (hypernym)subshrub, suffrutex


Member meronymgenus Tribulus, Tribulus

2. caltrop (plant) a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits


Synonymswater chestnut, water chestnut plant


Broader (hypernym)aquatic plant, hydrophyte, hydrophytic plant, water plant


Narrower (hyponym)Jesuits' nut, ling, ling ko, Trapa bicornis, Trapa natans, water caltrop


Member meronymgenus Trapa, Trapa

3. caltrop (plant) Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America


SynonymsCentauria calcitrapa, star-thistle


Broader (hypernym)centaury









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