/ Dictionary / Index O one-one: Meaning and Definition of Find definitions for: one-one Pronunciation: (wun'wun' usually read as wun't&schwa&wdspcwun'), [key] — adj. one-to-one (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. one old cat one-on-one Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language