conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases | playing a pipe or the bagpipes |
an electric railway operating below the surface of the ground (usually in a city) | a long tube made of metal or plastic that is used to carry water or oil or gas etc. |
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | a thin strip of covered cord used to edge hems |
(anatomy) any hollow cylindrical body structure | |
a hollow cylindrical shape | |