/ Dictionary / Index A Argo: Meaning and Definition of Find definitions for: Ar•go Pronunciation: (är'gō), [key] — gen. Ar•gus a very large southern constellation, now divided into Vela, Carina, Puppis, and Pyxis, four separate constellations lying largely south of Canis Major. (italics)the ship in which Jason sailed in quest of the Golden Fleece. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: argo (Thesaurus) argle-bargle argol Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language