Found 2 items, similar to speaking tube.
English → English (WordNet) Definition: speaking tube speaking tube n : a tube for conveying the sound of a voice from one room to another
English → English (gcide) Definition: Speaking tube Speaking \Speak"ing\, a. 1. Uttering speech; used for conveying speech; as, man is a speaking animal; a speaking tube. [1913 Webster] 2. Seeming to be capable of speech; hence, lifelike; as, a speaking likeness. [1913 Webster] A speaking acquaintance, a slight acquaintance with a person, or one which merely permits the exchange of salutations and remarks on indifferent subjects. Speaking trumpet, an instrument somewhat resembling a trumpet, by which the sound of the human voice may be so intensified as to be conveyed to a great distance. Speaking tube, a tube for conveying speech, especially from one room to another at a distance. To be on speaking terms, to be slightly acquainted. [1913 Webster]