What is the meaning of speaking tube?

noun

  • A tube for conveying the sound of a voice from one room to another. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). speaking tube. Retrieved September 21, 2026, from http://smartdefine.org/speaking_tube/definitions/1208260
ChicagoWordNet. 2010. "speaking tube" http://smartdefine.org/speaking_tube/definitions/1208260 (accessed September 21, 2026).
HarvardWordNet 2010, speaking tube, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/speaking_tube/definitions/1208260>.
MLAWordNet. "speaking tube" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/speaking_tube/definitions/1208260>