(anatomy) a vessel for conveying lymph or glandular secretions such as tears or bile
(botany) a tube or elongated cavity (such as a xylem vessel) for conveying water, sap, or air
(obsolete) guidance, direction
(physics) a layer (as in the atmosphere or the ocean) which occurs under usually abnormal conditions and in which radio or sound waves are confined to a restricted path
a pipe, tube or canal which carries gas or liquid from one place to another
an enclosure or channel for electrical cable runs, telephone cables, or other conductors
verb
to channel something (such as a gas) or propagate something (such as radio waves) through a duct or series of ducts
