/ Dictionary / Index K Kentucky Derby: Meaning and Definition of Find definitions for: Kentuck'y Der'by Pronunciation: [key] a horse race for three-year-olds, run annually since 1875, on the first Saturday in May, at Churchill Downs in Louisville, Ky. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Kentucky coffee tree Kentucky fried Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language