Related Clues:

• One-third of a child's game
• Muscular contraction
• Word with Tic and Toe
• 'A Nervous ___ Motion of the Head to the Left' (Andrew Bird song)
• Tic and toe partner
• Tic-toe connection
• Quirky trait
• Central square, maybe
• __-tac-toe
• Little spasm
• First of a game trio
• First X or O
• Tic and Toe companion
• First O
• Toe's neighbor