a long tube made of metal or plastic that is used to carry water or oil or gas etc.

empty of liquid; drain the liquid from

flow off gradually

a transverse and totally enclosed drain under a road or railway

drain that allows water on the deck of a vessel to flow overboard

a waste pipe that carries away sewage or surface water

drain that conveys liquid waste from toilets, etc.

drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas