back channel

See also: backchannel and back-channel

English

Noun

back channel (plural back channels)

  1. The smaller of two channels in a river that diverge to form an island.
  2. An unofficial communications channel used to make informal or subversive negotiations.
  3. (linguistics) A gesture or short prompt by which a listener invites a speaker to continue.

References
  • OED 2006
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