fifties

/ˈfɪftiz/
noun
  1. The decade of the 1950s, especially in reference to its culture, fashion, and history.
    • The fashion of the fifties included poodle skirts and leather jackets.
    • My grandparents love listening to music from the fifties.
    • Many classic cars from the fifties are now worth a lot of money.
  2. The range of temperatures from 50 to 59 degrees Fahrenheit (about 10 to 15 degrees Celsius).
    • The forecast says temperatures will be in the fifties all week.
    • It was a cool autumn day, with highs in the low fifties.
    • We had to wear jackets because the temperature dropped into the fifties.
  3. The ages between 50 and 59 in a person's life.
    • Many people in their fifties begin to plan for retirement.
    • She started her own business in her fifties.
    • He took up running in his fifties and completed a marathon.