/ Dictionary / Index O Orcus: Meaning and Definition of Find definitions for: Or•cus Pronunciation: (ôr'kus), [key] — n. the ancient Roman god of the underworld, identified with the Greek Pluto, or Hades. the ancient Roman underworld; Hades; Dis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orcus (Thesaurus) OR circuit Orczy Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language