The pipe by which the exhaust steam is led from the cylinder of a steam engine into the condenser or the atmosphere.

(UK, humorous, dated) The furnace in which contraband tobacco is burned after being seized by the state, or the chimney from which the resulting smoke rises.

flue pipe

A white myco-heterotrophic herb, Monotropa uniflora, of the family Ericaceae.

An organ pipe that produces sound through the vibration of air molecules, contrasted with reed pipe.

(medicine, slang) An artery.

(aviation) A pipe on a VTOL aircraft that expels compressed air in order to stabilize the craft.

(medicine, slang) A vein.

plural of pipe-tree

plural of pipe roll