Noun

1. Official routes of communication
2. A path over which electrical signals can pass
3. A passage for water (or other fluids) to flow through
4. 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)
5. 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
6. (often plural) a means of communication or access
7. A bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
8. A television station and its programs
9. A way of selling a company's product either directly or via distributors

Verb

1. Transmit or serve as the medium for transmission
2. Direct the flow of
3. Send from one person or place to another