/ Dictionary / Index B bucko: Meaning and Definition of Find definitions for: buck•o Pronunciation: (buk'ō), [key] — pl. buck•oes. young fellow; chap; young companion. a swaggering fellow. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Buckner buck passer Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language