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|Noun||1.||communication channel - (often plural) a means of communication or access; "it must go through official channels"; "lines of communication were set up between the two firms"|
communicating, communication - the activity of communicating; the activity of conveying information; "they could not act without official communication from Moscow"
back channel - an alternative to the regular channels of communication that is used when agreements must be made secretly (especially in diplomacy or government); "they negotiated via a back channel"
lens - (metaphor) a channel through which something can be seen or understood; "the writer is the lens through which history can be seen"
inter-group communication, liaison, contact, link - a channel for communication between groups; "he provided a liaison with the guerrillas"