Mac ‧ duff /məkˈdʌf/ BrE AmE
1 . a character in the play Macbeth by William ↑ Shakespeare , who kills Macbeth at the end of the play
2 . lead on, Macduff a slightly incorrect ↑ quotation from the play Macbeth , where the actual words are ‘lay on, Macduff’, now often used humorously when asking someone to lead you to a place