Related Clues:

• First X
• Uncontrolled contraction
• Emotional pain
• Foible
• First of three in a pencil/paper game
• Sharp pain, as from hunger
• It could be represented by an "X"
• Hunger twinge
• Persistent personal quirk
• ___-tac-toe
• First O?
• Sign of hunger
• Throe
• Quirky behavior
• The first O of O-O-O