SIXTIES

[plural] [noun]The sixties is the range of temperature between 60° and 69°.The temperature is usually around the sixties at this time of year.The sixties is also the period of years between 60 and 69 in any century.The Beatles made their first records in the sixties (= between 1960 and 1969).A person's sixties are the period in which they are aged between 60 and 69.Many people retire in their sixties.