英语释义
1. sewer entry 3
2. the common chamber into which the intestinal and urogenital tracts discharge especially in monotreme mammals, birds, reptiles, amphibians, and elasmobranch fishes also a comparable chamber of an invertebrate
3. the enlarged terminal part of the posterior embryonic digestive tract of a mammal that gives rise to the rectum, upper anal canal, and urogenital sinus
4. cesspool sense 2
5. the common chamber into which the intestinal, urinary, and generative canals discharge especially in monotreme mammals, birds, reptiles, amphibians, and elasmobranch fishes
6. the terminal part of the embryonic hindgut of a mammal before it divides into rectum, bladder, and genital precursors
7. a passage in a bone leading to a cavity containing a sequestrum