Definition of nasturtium noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈstɜːʃəm//
; NAmE NAmE//ˈstɜːrʃəm//
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a garden plant with round flat leaves and red, orange or yellow flowers that are sometimes eaten in salads Word OriginOld English (originally denoting any plant of the cabbage family of the genus Nasturtium, including watercress): from Latin, apparently from naris ‘nose’ + torquere ‘to twist’.
See the Oxford Advanced American Dictionary entry: nasturtium