Definitions
1.NounA sewer.
2.NounThe opening in reptiles, amphibians and birds, as well as elasmobranchians, lobe-finned fishes, and monotreme mammals, which serves as the common outlet for the urogenital ducts and rectum.
3.NounAn outhouse or lavatory.
4.NounA duct through which gangrenous material escapes a body.
5.NounStructure in the embryo during the development of the reproductive and urinary systems.