A pipe or channel for conveying water, etc.
A duct or tube into which electrical cables may be pulled; a type of raceway.
A means by which something is transmitted.
An investment vehicle that issues short-term commercial paper to finance long-term off-balance sheet bank assets.
a length of tube, or a system of tubes
tubes, considered as a group
the recreation of riding down a river on an inner tube
the recreation of tobogganing down a snowy slope or toboggan run on an inner tube