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Related Terms:
Definitions:
Noun
caltrop
devil's weed
Tribulus terestris
Definition: tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed
water chestnut
water chestnut plant
caltrop
Definition: a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
star-thistle
caltrop
Centauria calcitrapa
Definition: Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America
Definition: A small, metal object with spikes arranged so that, when thrown onto the ground, one always faces up as a threat to pedestrians, horses, and vehicles.