earwitness

from The Collaborative International Dictionary of English v.0.48
Earwitness \Ear"wit`ness\, n.
   A witness by means of his ears; one who is within hearing and
   does hear; a hearer. --Fuller.
   [1913 Webster]
from Bouvier's Law Dictionary, Revised 6th Ed (1856)
EAR-WITNESS. One who attests to things he has heard himself.
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