The Collaborative International Dictionary of English v.0.48:

Speechmaker \Speech"mak`er\, n.
   One who makes speeches; one accustomed to speak in a public
   assembly.
   [1913 Webster]

WordNet (r) 3.0 (2006):

speechmaker
    n 1: a person who delivers a speech or oration [syn: orator,
         speechmaker, rhetorician, public speaker,
         speechifier]