noun
: an aquatic herb ( Polygonum amphibium ) of Europe and No. America with floating leaves and emersed dense racemes of pinkish flowers
noun
: an aquatic herb ( Polygonum amphibium ) of Europe and No. America with floating leaves and emersed dense racemes of pinkish flowers
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012