ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: so called from the three ridges on the shell
: a freshwater clam ( Amblema costata syn. Quadrula plicata ) of the Mississippi drainage system
ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: so called from the three ridges on the shell
: a freshwater clam ( Amblema costata syn. Quadrula plicata ) of the Mississippi drainage system
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012