Related Clues:

• Long periods
• Sits in the cellar, maybe
• Loses freshness
• ''Rock of ___''
• Innocence and Aquarius
• Word of a toy's package
• Grows wiser, e.g.
• Yellows or grays
• Improves, as whiskey
• Nears retirement
• Important periods
• They may be checked at the door
• Millennia on end
• Bronze and Iron, e.g.
• Ever so long