noun
Etymology: gill (III)
: the fold of skin usually stiffened by bony plates and often covered with scales that protects externally the gill apparatus of most fishes — compare operculum
noun
Etymology: gill (III)
: the fold of skin usually stiffened by bony plates and often covered with scales that protects externally the gill apparatus of most fishes — compare operculum
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012