Webster's Revised Unabridged Dictionary · 1913

Orator

Orator , noun

[Latin, from orare to speak, utter. See Oration.]

1.
A public speaker; one who delivers an oration; especially, one distinguished for his skill and power as a public speaker; one who is eloquent.
I am no orator, as Brutus is. — Shakespeare
Some orator renowned In Athens or free Rome. — Milton
2.
(a) (Law) In equity proceedings, one who prays for relief; a petitioner.
(b)
(Law) A plaintiff, or complainant, in a bill in chancery. — Burrill
3.
(Eng. Universities) 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.