1. information received from other people that one cannot adequately substantiate; rumor: "according to hearsay, Bob had managed to break his arm"
▪ the report of another person's words by a witness, which is usually disallowed as evidence in a court of law:"everything they had told him would have been ruled out as hearsay"
Hearsay, in a legal forum, is an out-of-court statement which is being offered in court for the truth of what was asserted. In most courts, hearsay evidence is inadmissible (the "hearsay evidence rule") unless an exception to the hearsay rule applies. Wikipedia