cloaca
clo.aca \klo--'a--k*\ \-.ke-, -.se-\ \-'a--k*l\ n or clo.acae [L; akin to Gk klyzein to wash] [NL, fr. L] pl 1: SEWER 2: the common chamber into which the intestinal, urinary, and generative ca nals discharge in birds, reptiles, amphibians, and many fishes; also : a comparable chamber of an invertebrate - clo.acal aj