n. 1. One who, or that which, tickles. [ 1913 Webster ]
2. Something puzzling or difficult. [ 1913 Webster ]
3. A book containing a memorandum of notes and debts arranged in the order of their maturity. [ Com. Cant, U. S. ] Bartlett. [ 1913 Webster ]
4. A prong used by coopers to extract bungs from casks. [ Eng. ] [ 1913 Webster ]