Definition of sixty number from the Oxford Advanced Learner's Dictionary

      

    sixty

     
    BrE BrE//ˈsɪksti//
     
    ; NAmE NAmE//ˈsɪksti//
     
     
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  1. 1  number 60
  2. 2noun the sixties [plural] numbers, years or temperatures from 60 to 69
  3. Idioms between the ages of 60 and 69
See the Oxford Advanced American Dictionary entry: sixty