Related Clues:

• Facial movement
• Sign of stress
• Game opener
• The first X?
• Spasm
• Idiosyncrasy
• Blue eyes or baldness, e.g.
• Aspect
• Quirk of behavior
• Unconscious quirk
• Hair color, e.g.
• Start of a simple game
• First X, maybe
• It may be inherited
• Muscle spasm