The noun has 2 meanings:
Meaning #1:
North American herbaceous perennial of wet places having slender curled racemes of small white flowers
Synonyms: lizard's-tail, swamp lily, Saururus cernuus
Meaning #2:
swamp plant of Europe and North America having bright yellow flowers resembling buttercups
Synonyms: marsh marigold, kingcup, meadow bright, May blob, cowslip, Caltha palustris


