/ Dictionary / Index M Marcus: Meaning and Definition of Find definitions for: Mar•cus Pronunciation: (mär'kus), [key] — n. died a.d.336, pope 336. a male given name. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Marcos Marcus Aurelius Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language