conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases | emptying something accomplished by allowing liquid to run out of it |
an electric railway operating below the surface of the ground (usually in a city) | a gradual depletion of energy or resources |
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope | a pipe through which liquid is carried away |
(anatomy) any hollow cylindrical body structure | tube inserted into a body cavity (as during surgery) to remove unwanted material |
a hollow cylindrical shape | |