Thieves cant. Also buzgloak. [f. BUZZ v.3] A pickpocket.
1812. J. H. Vaux, Flash Dict., Buz-cove or Buz-gloak, a pickpocket; a person who is clever at this practice, is said to be a good buz.
1830. Lytton, P. Clifford, 56. He is nothing better than a buzz gloak.
1859. Sala, Tw. round Clock, 175. These copper captains and cozening buzgloaks.