Related Clues:

• 1, for one
• 'Far out, man!'
• One or two, e.g.
• 1, 2, or 3
• PIN part
• Toe or two
• Thumb, e.g.
• "Take note, man"
• ZIP code part
• Finger or toe, e.g.
• 1, 2 or a finger
• Finger, e.g.
• 2, for one
• 1 in 1,000,000?
• One of 101 in a googol