/ Dictionary / Index A Abaco: Meaning and Definition of Find definitions for: Ab•a•co Pronunciation: (ab'u-kō"), [key] — n. two islandsin the N Bahamas. 6501; 776 sq. mi. (2010 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aback abacterial Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language