'water dragon' definitions:

North American herbaceous perennial of wet places having slender curled racemes of small white flowers [syn: lizard's-tail, swamp lily, water dragon, Saururus cernuus]

Swamp plant of Europe and North America having bright yellow flowers resembling buttercups [syn: marsh marigold, kingcup, meadow bright, May blob, cowslip, water dragon, Caltha palustris]