阴沟
Cloaca \Clo"a"ca\, n.; pl. {Cloac[ae]}. [L.] 1. A sewer; as, the Cloaca Maxima of Rome. 2. A privy. 3. (Anat.) The common chamber into which the intestinal, urinary, and generative canals discharge in birds, reptiles, amphibians, and many fishes.
cloaca n : a waste pipe that carries away sewage or surface water [syn: {sewer}, {sewerage}] [also: {cloacae} (pl)]