What does CHANNEL mean?

noun

1. a path over which electrical signals can pass“a channel is typically what you rent from a telephone company”
2. a passage for water (or other fluids) to flow through“the fields were crossed with irrigation channels”
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“the ship went aground in the channel”
5. (often plural) a means of communication or access“it must go through official channels”
6. a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance“the tear duct was obstructed”
7. a television station and its programs“a satellite TV channel”
8. a way of selling a company's product either directly or via distributors“possible distribution channels are wholesalers or small retailers or retail chains or direct mailers or your own stores”