backchannel

== English == === Alternative forms === back-channel === Etymology === From back +‎ channel. === Noun === backchannel (plural backchannels) Alternative form of back channel. === Verb === backchannel (third-person singular simple present backchannels, present participle (US) backchanneling or (UK) backchannelling, simple past and past participle (US) backchanneled or (UK) backchannelled) (transitive) To employ a back channel. (linguistics, transitive) To employ non-verbal (oral and visual) means to influence a speaker without interruption.