Channel

a path over which electrical signals can pass

a passage for water (or other fluids) to flow through

a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)

a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels

(often plural) a means of communication or access

a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

a television station and its programs

a way of selling a company's product either directly or via distributors

transmit or serve as the medium for transmission

direct the flow of

send from one person or place to another