Emily Dickinson Lexicon

PEC-TO-RIL'O-QUY, a. [L. pectus, the breast, and loquor, to speak – a speaking from the breast.]

In medicine, when a patient's voice, distinctly articulates seems to proceed from the point of the chest on which the ear or a stethoscope is placed, there is said to be pectoriloquy. – Collin. An exalted degree of bronchophony, resembling the sound heard by placing a stethoscope on the trachea when a person speaks. – Hall.