Orator - Vine's Expository Dictionary of New Testament Words
Orator[ 1,,G4489, rhetor ]
from an obsolete present tense, rheo, to say" (cp. Eng., "rhetoric"), denotes "a public speaker, an orator," Acts 24:1, of Tertullus. Such a person, distinct from the professional lawyer, was hired, as a professional speaker, to make a skillful presentation of a case in court. His training was not legal but rhetorical.