C2 noun #72,075 most common

A tube for conveying speech, especially from one room to another at a distance.

speaking tube in 30 Seconds

  • (noun) A tube for conveying speech, especially from one room to another at a distance.

Meanings

  1. 1
    noun A tube for conveying speech, especially from one room to another at a distance.

Synonyms

voicepipe
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