1. (n.) One who, or that which, tickles.

2. (n.) Something puzzling or difficult.

3. (n.) A book containing a memorandum of notes and debts arranged in the order of their maturity.

4. (n.) A prong used by coopers to extract bungs from casks.

actor advice agate aide-memoire alerting antagonist antihero ball baseball bat bat battledore bauble bit bit part blocks book braid broad hint brush bun cast catchword cauda caudal appendage caudation caution character checkerboard chessboard chignon club clue cockhorse coil continuity cricket bat cue word dock doll doll carriage evidence fantail fat part feeder flapper frame frame of mind gentle hint gesture gewgaw gimcrack glimmer glimmering golf club heart heavy hero heroine hint hobbyhorse hot lead humor implication index indication ingenue inkling innuendo insinuation intimation jack-in-the-box jacks jackstones jackstraws jogger key key word kick kickshaw knickknack knot lead lead role leading lady leading man leading woman libretto lines look marble marionette memorandum mig mind monition mood morale nod note nudge office paper doll part passing word person personage pick-up sticks piece pigtail pinwheel plait playbook plaything pointer prompt prompter prompting protagonist puppet queue racket rag doll rattail remembrance remembrancer reminder rocking horse role scenario scene plot scent score script shooting script side sign signal soubrette spirit spirits spoor sport state of mind steelie steer straight part stub suggestion supporting character supporting role suspicion symptom tail tailpiece taw teetotum telltale temper text tickler tip tip-off title role tone top topknot toy toy soldier trace track trinket twist vein vestige villain walk-on walking part warning whiff whim-wham whisper wink