culvert a transverse and totally enclosed drain under a road or railway
scupper drain that allows water on the deck of a vessel to flow overboard
cloaca,
sewerage,
sewer (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
soil pipe drain that conveys liquid waste from toilets, etc.
drain -
emptying something accomplished by allowing liquid to run out of it
drain A conduit allowing liquid to flow out of an otherwise contained volume.
drain To cause liquid to flow out.
drain An artificial waterway for carrying storm water or industrial discharge.
drain A street drainage system building component that serves as intake of surface water on paved surfaces and leads it to underground drainage facilities, such as the sewer tunnel.