Definition of "fifties" []

• Plural form of fifty. (noun)
• Fifty-dollar bills. (noun)
• The decade of the 1850s, 1950s, etc. (noun)
• The decade of one's life from age 50 through age 59. (noun)

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• "A lot of the cumulative brain trauma leaves players demented in their fifties is actually sustained during practice."
• "Another reason we are so down on the fifties is our reverence for the sixties."
• "Synthetic phonics, which I have taught continuously since Training College in New Zealand in the fifties, is simply fast phonics to fabulous reading."