Dun (n.)
horse's name [involving the lifting of a log ‘horse’ in a Christmas game called ‘drawing dun out of the mire’]
RJ I.iv.41[Mercutio to Romeo] If thou art Dun, we'll draw thee from the mire [pun: 40 >> dun's the mouse]
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL