Meaning – A channel is defined as a path along which a signal travels. It is known that a signal usually has one origin and a single or multiple destinations. The path that the signal takes, to go from the source to the destination/destinations, is known as the channel. Some of the commonly known channels include data channel and output channel.
Alternatively, a channel is also a means of one-way transmission, in the context of data communication.
Example of usage – “The engineer was tasked with monitoring the channel to spot any losses in the signal.”