单词	backchannel
释义	backchannel /ˈbaktʃanl / noun 1A secondary or covert route for the passage of information: we used him as a diplomatic backchannel... Secret White House backchannels (discovered from recently released White House tapes) are used to support the book's contention. In a sense, he is right that backchannels always exist and always will. A friend calls my weblog ‘the backchannel to my brain’, and in a way, it is. 2 Psychology A sound or gesture made to give continuity to a conversation by a person who is listening to another: [as modifier]: supportive backchannel cues... Amongst these are what have been characterised in the literature as backchannels, minimal response or receipt tokens, and include items such as Yeah, Oh, Right, and Great.
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