or boung-nipper, bung-knife, bung, subs. phr. (old).A cut-purse; a sharper: Fr. couper une queue de rat (i.e., to cut off a rats tail) = TO NIP A BUNG.
c. 1696. B. E., A New Dictionary of the Canting Crew, s.v. BUNG-NIPPER, c. a Cutpurse, or Pickpocket. CLAYING THE BUNG, c. cutting the Purse, or Picking the Pocket.