Meaning of esophageal speech

esoph'age'al speech'

Pronunciation: [key]
— Speech Pathol.
  1. a technique for producing speech sounds without using the larynx, for people whose larynges are lacking or disabled, by expelling swallowed air that is modified by the tongue, lips, and palate as in normal speech.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.