A duct or tube into which electrical cables may be pulled; a type of raceway.
A pipe or channel for conveying water, etc.
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 type of electron tube that controls electron current through vacuum between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.