What is Channel?

Channel definition and meaning on Dictionary terms:
the bed of a stream, river, or other waterway.
Nautical. a navigable route between two bodies of water.
the deeper part of a waterway.

a wide strait, as between a continent and an island.
a course into which something may be directed: He hoped to direct the conversation to a new channel.
a route through which anything passes or progresses: channels of trade.
channels, the specific, prescribed, or official course or means of communication: In an emergency he was able to reach the governor without going through channels.
a groove or furrow.
a means of access: He considers the Senate a channel to the White House.
Architecture. a flute in a column, especially one having no fillet between it and other flutes. any of the prominent vertical grooves in a triglyph.

(in jazz or popular music) a bridge.
a frequency band of sufficient width for one- or two-way communication from or to a transmitter used for television, radio, CB radio, telephone, or telegraph communication.
Computers. a path for the transfer of signals or data within a computer or between a computer and its peripheral equipment.
Digital Technology. feed(def 23): Learn how to create your own web channel. a web page or website that distributes frequently updated content by means of a feed: Subscribe to my YouTube channel.

either of the two signals in stereophonic or any single signal in multichannel sound recording and reproduction.
Cell Biology. a transient opening made by a protein embedded in a cell membrane, permitting passage of specific ions or molecules into or out of the cell: calcium channel.
a tubular passage for liquids or fluids.
Building Trades. any structural member, as one of reinforced concrete, having the form of three sides of a rectangle. a number of such members: channel in 100-foot lengths. channel iron.

verb (used with object), chan