conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases | a detailed analysis |
an electric railway operating below the surface of the ground (usually in a city) | alternative names for the body of a human being |
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | the branch of morphology that deals with the structure of animals |
(anatomy) any hollow cylindrical body structure | |
a hollow cylindrical shape | |