BACKCHANNEL


Meaning of BACKCHANNEL in English

/ ˈbæktʃænl; NAmE / noun

1.

a secret or unusual way of passing information to other people

2.

( linguistics ) a sound or sign that sb makes to show that they are listening to the person who is talking to them

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.