Related Clues:

• Factor in some admission prices
• Senior discount determiner
• One cause of discrimination
• It's just a matter of time
• It's 'only a number'
• What cake candles signify
• Number on a cake, perhaps
• Cultural period
• Sit in a cellar, say
• ''The Gilded __'' (Twain novel)
• Word after Iron or Ice
• Store in casks, as wine
• Ever-increasing statistic
• We all do it
• Time of one's existence