OPENBILL Meaning of OPENBILL in English ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun : a stork of the genus Anastomus characterized by a grooved bill with the upper and lower parts touching only at the base and tip Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012