/ Dictionary / Index A abba-dabba: Meaning and Definition of Find definitions for: ab•ba-dab•ba Pronunciation: (ab"u-dab'u), [key] — n. Slang. a person or thing of little importance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. abbacy Abbai Related Content Daily Word Quiz: slough Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language