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watercress
(-kres′)
noun
a white-flowered plant (Nasturtium officinale) of the crucifer family, growing generally in running water, as from springs: its leaves are used in salads, soups, etc.
Origin: ME watercresse: see water & cress
See watercress in American Heritage Dictionary 4
noun
- A pungent perennial Eurasian herb (Rorippa nasturtium-aquaticum) of the mustard family, growing in freshwater ponds and streams and used in salads and as a garnish.
- Any of several related aquatic plants.
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