(~s)
An ~ is a small box with a microphone which is connected to a loudspeaker in another room. You use it to talk to the people in the other room.
N-COUNT
(~s)
An ~ is a small box with a microphone which is connected to a loudspeaker in another room. You use it to talk to the people in the other room.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012