/ Dictionary / Index D Dumbarton Oaks: Meaning and Definition of Find definitions for: Dum'bar•ton Oaks' Pronunciation: (dum'bär-tn), [key] an estate in the District of Columbia: site of conferences held to discuss proposals for creation of the United Nations, August–October, 1944. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Dumbarton dumb-ass Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language