cloaca

clo·aca

noun \klō-ˈā-kə\

plural clo·acae \-ˌkē, -ˌsē\

Definition of CLOACA

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 cavity containing a sequestrum

—clo·acal \-ˈā-kəl\ adjective