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1. The decade from 1950 to 1959
   - 1950s
    
2. The time of life between 50 and 60
   - mid-fifties

1. The cardinal number that is the product of ten and five
   - 50, L
    
2. A United States bill worth 50 dollars
   - fifty dollar bill

Type of: bank bill, bank note, banker's bill [N. Amer], banknote, bill [N. Amer], decade, decennary, decennium, Federal Reserve note [US], government note [US], greenback [US, informal], large integer, note, time of life

Part of: adulthood, maturity

Encyclopedia: Fifties