Roscius, Quintus, famous Roman comic actor, born near Lanuvium, in the Sabine territory; was a friend of Cicero, and much patronised by the Roman nobles; was thought to have reached perfection in his art, so that his name became a synonym for perfection in any profession or art.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Roscher, Wilhelm * Roscoe, Sir Henry