/ Dictionary / Index K Knights of Labor: Meaning and Definition of Find definitions for: Knights' of La'bor Pronunciation: [key] a secret workingmen's organization formed in 1869 to defend the interests of labor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Knights of Columbus Knights of Malta Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language