the devil a one pronoun2 •(slang, old-fashioned) Not a single one, none (of a number of people or things).making great chear with a good deal of vineger, the devil a one of them did forbear from his victuals, it was a triumphant and incomparable spectacle to see how they ravened and devoured. — 1653 •(slang, old-fashioned) Not; with a singular pronoun, negates the clause.The devil a one of me will ever set foot there.