#drainpipe__drain__waste_pipe__wastepipe  a pipe through which liquid is carried away
  supertype:  pipe__pipage__piping  a long tube made of metal or plastic that is used to carry water or oil or gas etc.
  subtype:  culvert  a transverse and totally enclosed drain under a road or railway
  subtype:  scupper  drain that allows water on the deck of a vessel to flow overboard
  subtype:  sewerage__sewer__cloaca  a waste pipe that carries away sewage or surface water
  subtype:  soil_pipe  drain that conveys liquid waste from toilets, etc.
  subtype:  trap.drainpipe  drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas

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