/ Dictionary / Index R Roscius: Meaning and Definition of Find definitions for: Ros•ci•us Pronunciation: (rosh'ē-us, rosh'us), [key] c126–c62b.c., Roman actor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Roscian roscoe Related Content Daily Word Quiz: drowsy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language