noun
: either of two No. American spireas:
a. : hardhack 1
b. : a small erect mat-forming spirea ( Spiraea densiflora ) of the western United States with glabrous leaves and lavender flowers
noun
: either of two No. American spireas:
a. : hardhack 1
b. : a small erect mat-forming spirea ( Spiraea densiflora ) of the western United States with glabrous leaves and lavender flowers
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012