noun
: an excretory usually paired aperture opening within or behind the cloacal region in many fishes and affording communication between the abdominal cavity and the exterior
noun
: an excretory usually paired aperture opening within or behind the cloacal region in many fishes and affording communication between the abdominal cavity and the exterior
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012