Related Clues:

• Back ailment
• First X?
• First X or O?
• Convulsion
• Part of three-in-a-row
• Nervous habit
• Muscular jerk?
• Sudden spasm
• More than a twitch
• Certain X or O
• Half a mint?
• X-X-X part
• ___ Tacs (breath mints)
• Facial twitch
• Muscle movement