Noun

1. A path over which electrical signals can pass
2. A passage for water (or other fluids) to flow through
3. 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)
4. 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
5. (often plural) a means of communication or access
6. A bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
7. A television station and its programs
8. 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