caltrop

Primary Meanings of caltrop

1.
n
tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed
2.
n
a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
3.
n
Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America
Full Definitions of caltrop
1

n tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed

Synonyms:
Tribulus terestris, devil's weed
Type of:
subshrub, suffrutex
low-growing woody shrub or perennial with woody base
2

n a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits

Synonyms:
water chestnut, water chestnut plant
Types:
Jesuits' nut, Trapa natans, water caltrop
a variety of water chestnut
Trapa bicornis, ling, ling ko
water chestnut whose spiny fruit has two rather than 4 prongs
Type of:
aquatic plant, hydrophyte, hydrophytic plant, water plant
a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth
3

n Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America

Synonyms:
Centauria calcitrapa, star-thistle
Type of:
centaury
any plant of the genus Centaurea

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