a type of landform consisting of the outline of a path of relatively shallow and narrow body of fluid

In physical geography, a channel is a type of landform consisting of the outline of a path of relatively shallow and narrow body of fluid, most commonly the confine of a river, river delta or strait.

the physical medium that carries a signal between the transmitter and the receiver

In one meaning, a channel is the physical medium that carries a signal between the transmitter and the receiver.

a collection of pages your visitors go via to reach a specific goal as well as a specific goal

A channel is essentially a collection of pages your visitors go via to reach a specific goal as well as a specific goal might look like this.

a body of water that connects two larger bodies of water (like the English Channel)

A channel is a body of water that connects two larger bodies of water (like the English Channel).

a component that processes a message in some way,

A channel is a component that processes a message in some way, for example, by authenticating a message.

a virtual connection inside a connection

A channel is a virtual connection inside a connection.

a syndication tool or method of content delivery and service to a community

A channel is a syndication tool or method of content delivery and service to a community.

a low-bandwidth, bidirectional byte stream, which resembles a serial link

A channel is a low-bandwidth, bidirectional byte stream, which resembles a serial link.

a specialized processor with the instruction set optimized for transferring data between a peripheral and main memory

A channel is a specialized processor with the instruction set optimized for transferring data between a peripheral and main memory.

the means of passing information from a sender to a recipient

In communications, a channel is the means of passing information from a sender to a recipient.

an object that transports messages across remoting boundaries such as application domains, processes, and computers

A channel is an object that transports messages across remoting boundaries such as application domains, processes, and computers.

for example by authenticating a message

A channel is a component that processes a message in some way, for example, by authenticating a message.

an on-line or cloud-based service

A channel is typically an on-line or cloud-based service such as Twitter, Dropbox, Gmail, Evernote or Weather.

a part of a river or harbor that is deep enough to let ships sail through

A channel is also a part of a river or harbor that is deep enough to let ships sail through.

a unit of lights that will be controlled individually

A channel is a unit of lights that will be controlled individually.

a separate signal path

In components and systems, a channel is a separate signal path.

a single strip of controls relating to one input

In the context of a mixing console a channel is a single strip of controls relating to one input.

an invisible pathway on which energy is necessary for healing flows

A channel is an invisible pathway on which energy is necessary for healing flows.

the area between two parallel trendlines – , upper trendline (resistance line)

A channel is the area between two parallel trendlines – upper trendline (resistance line), and, the lower trend line (support line).