conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases | a thing constructed; a complex entity constructed of many parts |
an electric railway operating below the surface of the ground (usually in a city) | the manner of construction of something and the arrangement of its parts |
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | a particular complex anatomical part of a living thing and its construction and arrangement |
(anatomy) any hollow cylindrical body structure | the complex composition of knowledge as elements and their combinations |
a hollow cylindrical shape | the people in a society considered as a system organized by a characteristic pattern of relationships |