orator

n. one who delivers a speech; public speaker; preacher

Orator is an originally Latin word for (public) speaker.
See more at Wikipedia.org...

Noun
1. a person who delivers a speech or oration
(synonym) speechmaker, rhetorician, public speaker, speechifier
(hypernym) speaker, talker, utterer, verbalizer, verbaliser
(hyponym) eulogist, panegyrist
(derivation) orate

n. orator, one who delivers speech; public speaker; preacher

(n.)
In equity proceedings, one who prays for relief; a petitioner.
  

(n.)
An officer who is the voice of the university upon all public occasions, who writes, reads, and records all letters of a public nature, presents, with an appropriate address, those persons on whom honorary degrees are to be conferred, and performs other like duties; -- called also public orator.
  

(n.)
A public speaker; one who delivers an oration; especially, one distinguished for his skill and power as a public speaker; one who is eloquent.
  

(n.)
A plaintiff, or complainant, in a bill in chancery.