earwitness

ear·wit·ness

E0010150 (îr′wĭt′nĭs)n. A person who has heard someone or something and can bear witness to the fact.
[ear + (eye)witness.]

earwitness

(ˈɪərˌwɪtnɪs) n1. a. a person who gives evidence or information about something heard rather than seenb. (as modifier): earwitness reports. 2. (as modifier): earwitness reports.