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: a plant with circular leaves and yellow, orange, or red flowers that are sometimes eaten
Full Definition of NASTURTIUM
: any of a genus (Tropaeolum of the family Tropaeolaceae, the nasturtium family) of herbs of Central and South America with showy spurred flowers and pungent edible seeds and leaves; especially: either of two widely cultivated ornamentals (T. majus and T. minus)
Any of various annual plants of the genus Tropaeolum (family Tropaeolaceae), native to Mexico, Central America, and northern South America, and cultivated elsewhere as garden plants. Brilliant yellow, orange, or red flowers are funnel-shaped and have a long spur that contains sweet nectar. The peppery-tasting leaves and flowers are sometimes used in salads, and the young flower buds and fruit are sometimes used as seasoning. Nasturtium also is a genus of aquatic herbs in the mustard family (seewatercress).