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.

Dutch: cloaca
Polish: kloaka, stek

A waste pipe that carries away sewage or surface water.

synonyms: sewer, sewerage.

Roget 350: conduit, channel, duct, watercourse, race; head race, tail race; abito^†, aboideau^†, aboiteau [Fr.], bito^†; acequia^†, acequiador^†, acequiamadre^†; arroyo; adit^†, aqueduct, canal, trough, gutter, pantile; flume, ingate^†, runner; lock-weir, tedge^†; vena^†; dike, main, gully, moat, ditch, drain, sewer, culvert, cloaca, sough, kennel, siphon; piscina^†; pipe etc. (tube) 260; funnel; tunnel etc. (passage) 627; water pipe, waste pipe; emunctory^†, gully hole, artery, aorta, pore, spout, scupper; adjutage^†, ajutage^†; hose; gargoyle; gurgoyle^†; penstock, weir; flood gate, water gate; sluice, lock, valve; rose; waterworks.    pipeline.    ... show more

Roget 653: uncleanness etc. adj.; impurity; immundity^†, immundicity^†; impurity etc. 961 [of mind]. defilement, contamination etc. v.; defoedation^†; soilure^†, soiliness^†; abomination; leaven; taint, tainture^†; fetor etc. 401^†.    decay; putrescence, putrefaction; corruption; mold, must, mildew, dry rot, mucor, rubigo^†.    slovenry^†; slovenliness etc. adj.; squalor.    dowdy, drab, slut, malkin^†, slattern, sloven, slammerkin^†, slammock^†, slummock^†, scrub, draggle-tail, mudlark^†, dust-man, sweep; beast.    dirt, filth, soil, slop; dust, cobweb, flue; smoke, soot, smudge, smut, grit, grime, raff^†; sossle^†, sozzle^†.    sordes^†, dregs, grounds, lees; argol^†; sediment, settlement heeltap^†; dross, drossiness^†; mother^†, precipitate, scoriae, ashes, cinders.    recrement^†, slag; scum, froth.    hogwash; ditchwater^†, dishwater, bilgewater^†; rinsings, cheeseparings; sweepings etc. (useless refuse) 645; offscourings^†, outscourings^†; off scum; caput mortuum [Lat.], residuum, sprue, fecula [Lat.], clinker, draff^†; scurf, scurfiness^†; exuviae [Lat.], morphea; fur, furfur^†; dandruff, tartar.    riffraff; vermin, louse, flea, bug, chinch^†.    mud, mire, quagmire, alluvium, silt, sludge, slime, slush, slosh, sposh [U.S.].    spawn, offal, gurry [U.S.]; lientery^†; garbage, carrion; excreta etc. 299; slough, peccant humor, pus, matter, suppuration, lienteria^†; faeces, feces, excrement, ordure, dung, crap [Vulg.], shit [Vulg.]; sewage, sewerage; muck; coprolite; guano, manure, compost.    dunghill, colluvies^†, mixen^†, midden, bog, laystall^†, sink, privy, jakes; toilet, john, head; cess^†, cesspool; sump, sough, cloaca, latrines, drain, sewer, common sewer; Cloacina; dust hole.    sty, pigsty, lair, den, Augean stable^†, sink of corruption; slum, rookery.    ... show more

Dutch: riool, rioolbuis
Polish: ściek