Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun cloaca

2 senses of cloaca

Sense 1
cloaca -- ((zoology) the cavity (in birds, reptiles, amphibians, most fish, and monotremes but not mammals) at the end of the digestive tract into which the intestinal, genital, and urinary tracts open)
       => cavity, bodily cavity, cavum -- ((anatomy) a natural hollow or sinus within the body)

Sense 2
sewer, sewerage, cloaca -- (a waste pipe that carries away sewage or surface water)
       => drain, drainpipe, waste pipe -- (a pipe through which liquid is carried away)