/ Dictionary / Index B bonus baby: Meaning and Definition of Find definitions for: bo'nus ba"by Pronunciation: [key] an athlete who is paid a substantial bonus to sign his or her first professional contract. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Bonus Army Bonus Eventus Related Content Daily Word Quiz: cosmology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language