Source : Webster's Revised Unabridged Dictionary (1913)

Discourser \Dis*cours"er\, n.
   1. One who discourse; a narrator; a speaker; an haranguer.

            In his conversation he was the most clear
            discourser.                           --Milward.

   2. The writer of a treatise or dissertation.

            Philologers and critical discoursers. --Sir T.
                                                  Browne.