Related Clues:

• First X?
• First X or O?
• Convulsion
• Part of three-in-a-row
• Nervous habit
• Sudden spasm
• Certain X or O
• Half a mint?
• X-X-X part
• ___ Tacs (breath mints)
• Facial twitch
• Muscle movement
• First ''O'' of O-O-O
• '-- Tac Dough'
• First correct ''Hollywood Squares'' square