cloaca
演变路径（由近及远）
- 英语
- 借自 ←拉丁语 cloāca “sewer”
词源说明
Borrowed from Latin cloāca (“sewer”), related to cluō (“cleanse; purge”), but the derivation is uncertain.
释义（英文）
名词 Noun
- (sometimes figurative) A sewer.
- (anatomy, zoology) The 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.
- An outhouse or lavatory.
- (anatomy) A duct through which gangrenous material escapes a body.
- (embryology) Structure in the embryo during the development of the reproductive and urinary systems.