cloacae

clo·a·ca   (klō-ā'kə)    n.   pl. clo·a·cae (-sē') A sewer or latrine. Zoology The common cavity into which the intestinal, genital, and urinary tracts open in vertebrates such as fish, reptiles, birds, and some primitive mammals. The posterior part of the intestinal tract in various invertebrates. [Latin cloāca, sewer, canal.] clo·a'cal (-kəl) adj.

cloaca 

Main Entry: clo·aca
Pronunciation: klO-'A-k&
Function: noun
Inflected Form: plural clo·acae /-"kE, -"sE/
1 a : the common chamber into which the intestinal, urinary, and generative canals discharge especially in monotreme mammals, birds, reptiles, amphibians, and elasmobranch fishes b : the terminal part of the embryonic hindgut of a mammal before it divides into rectum, bladder, and genital precursors
2 : a passage in a bone leading to a cavitycontaining a sequestrum —clo·acal /-'A-k&l/ adjective

cloaca clo·a·ca (klō-ā'kə)
n.

1. In early embryos, the entodermally lined chamber into which the hindgut and allantois empty.

2. The common cavity into which the intestinal, genital, and urinary tracts open in vertebrates such as fish, reptiles, birds, and some mammals.

3. An opening in a diseased bone containing a fragment of dead bone.

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clo·a'cal (-kəl) adj.