A tube, a pipe, or a hole.
An abnormal connection or passageway between organs or vessels that normally do not connect.
The tube through which the wine of the Eucharist was once sucked from the chalice in certain ceremonies (such as papal Masses).
A pipe that is a conduit for water; an essential element of plumbing.
A device for smoking, such as a hookah or bong, in which the smoke is drawn through a container of water before inhaling.