1. The decade from 1960 to 1969
   "The Civil Rights Movement gained momentum in the sixties";
   - 1960s
    
2. The time of life between 60 and 70
   "He retired in his mid-sixties";
   - mid-sixties

1. The cardinal number that is the product of ten and six
   "She retired at sixty";
   - 60, LX

Type of: decade, decennary [archaic], decennium, large integer, time of life

Part of: age, eld, geezerhood [informal], old age, years

Encyclopedia: Sixties