Related Clues:

• Game name start
• Sign of nerves, perhaps
• Little jerk?
• Half a mint
• Personal quirk
• Partner of Tac and toe
• Obsession
• Muscle twitch
• Habit, of a sort
• Odd mannerism
• Sudden movement
• One-third of a child's game
• Muscular contraction
• ''Hollywood Squares'' square
• 'A Nervous ___ Motion of the Head to the Left' (Andrew Bird song)