anchor, ground tackle - a mechanical device that prevents a vessel from moving

projection - any structure that branches out from a central support

organ pipe, pipework, pipe - the flues and stops on a pipe organ

chimney - a vertical flue that provides a path through which smoke from a fire is carried away through the wall or roof of a building

chimneystack - the part of the chimney that is above the roof; usually has several flues

conduit - a passage (a pipe or tunnel) through which water or electric wires can pass; "the computers were connected through a system of conduits"

lamp chimney, chimney - a glass flue surrounding the wick of an oil lamp