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 sluice or pipe which allows the controlled flow of water from behind a dam, typically routing it to a turbine of a power plant.
The barrel of a wooden pump.