Related Clues:

• ___ spot
• ''Iron'' or ''Stone'' follower
• Grow gray, perhaps
• Ice or Iron
• Get gray
• See 66A
• It's 'just a number'
• Golden, for one
• Pulitzer category, briefly
• What the number of birthday candles signifies
• Yours gets a yearly increase
• Go gray, say
• ---
• Cause of some lines
• Thing with a life of its own?