Related Clues:

• Penultimate Greek letter
• Beginning to love you?
• It follows chi
• Wave function symbol
• Greek sleeper's letter?
• Tire-pressure unit: Abbr.
• Tire-pressure letters
• Pressure unit, briefly
• Catherine -- -Jones'
• Catherine -- -Jones
• 23rd letter of the Greek alphabet
• Letters on tires
• It comes before omega
• Omega lead-in
• Trident-shaped Greek letter