noun
also frontal plate
: a platelike prolongation of the base of the upper mandible over the forehead that is a characteristic feature of the coots and gallinules
noun
also frontal plate
: a platelike prolongation of the base of the upper mandible over the forehead that is a characteristic feature of the coots and gallinules
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012