EAR-WITNESS. One who attests to things he has heard himself.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
The ear-witness has less credibility than the eye-witness.
His lifelong love for music infuses the writing, and he occasionally gives his own ear-witness testimony of some of the musical disorders." ANDREW DRUCKENBROD
One of the most impressive eye- and ear-witness stories came from a group in Banff National Park directly under the meteor's path.
Hughes warned Knox that he was going to give him a yellow card and according to ear-witness reports, Knox told the referee, in the strongest Australian-ese, what to do with said yellow card.
My final statement before it went to cross-examination was if the prosecution theory was true, we would have to discount the testimony of all seven eye- and ear-witnesses, and suspend the laws of time and space.
This is consistent with the rapid tapping and slapping of the "ear-witnesses" as they "acted out" the fusillade they heard on the night of the shooting.