Related Clues:

• Small note
• Pre-blastoff number
• Die's lowest
• What two heads are better than
• "A Chorus Line" number
• Cardinal number
• Fifth single digit, alphabetically
• Its square root is itself
• 4/4
• Not compromised
• "The loneliest number," in a 1969 hit
• Brando's ''The Wild ___''
• 'That ___'
• Penultimate countdown word, often
• Solid yellow billiard ball