Related Clues:

• Hiccup
• Contraction
• Foible
• First of three in a pencil/paper game
• It could be represented by an "X"
• Involuntary muscle contraction
• Muscle cramp
• Persistent personal quirk
• ___-tac-toe
• Big jerk
• Weightlifter's maneuver
• Jolt
• First O?
• Sudden jerk
• Throe