speaking tube(redirected from Speaking tubes and voice pipes)
Also found in: Dictionary, Thesaurus, Encyclopedia.
a form of hearing aid, a tube with an earpiece at one end and a cone at the other; speech into the cone is amplified to the ear.
speak·ing tube(spēk'ing tūb)
A tube with an earpiece at one end and a cone at the other to amplify sound, especially speech, received by the cone.