The Collaborative International Dictionary of English v.0.48:

Hearsay \Hear"say`\ (h[=e]r"s[=a]`), n.
   Report; rumor; fame; common talk; something heard from
   another.
   [1913 Webster]

         Much of the obloquy that has so long rested on the
         memory of our great national poet originated in
         frivolous hearsays of his life and conversation.
                                                  --Prof.
                                                  Wilson.
   [1913 Webster]

   Hearsay evidence (Law), that species of testimony which
      consists in a narration by one person of matters told him
      by another. It is, with a few exceptions, inadmissible as
      testimony. --Abbott.
      [1913 Webster]

WordNet (r) 3.0 (2006):

hearsay evidence
    n 1: evidence based on what someone has told the witness and not
         of direct knowledge