資料來源 : Webster's Revised Unabridged Dictionary (1913)

Waterleaf \Wa"ter*leaf`\, n. (Bot.)
   Any plant of the American genus {Hydrophyllum}, herbs having
   white or pale blue bell-shaped flowers. --Gray.

資料來源 : WordNet®

waterleaf
     n : any of several plants of the genus Hydrophyllum