A channel is a television station.

A channel is a band of radio waves on which radio messages can be sent and received.

If you do something through a particular channel, or particular channels, that is the system or organization that you use to achieve your aims or to communicate.

If you channel money or resources into something, you arrange for them to be used for that thing, rather than for a wider range of things.

If you channel your energies or emotions into something, you concentrate on or do that one thing, rather than a range of things.

A channel is a passage along which water flows.

A channel is a route used by boats.

The Channel or the English Channel is the narrow area of water between England and France.