pipe
nounA hollow cylinder or tube used to conduct a liquid, gas, or finely divided solid.
nounA section or piece of such a tube.
nounA device for smoking, consisting of a tube of wood, clay, or other material with a small bowl at one end.
nounAn amount of smoking material, such as tobacco, needed to fill the bowl of a pipe; a pipeful.
nounA tubular part or organ of the body.
nounThe passages of the human respiratory system.